Compact molded case circuit breakers Series 8550

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Compact molded case circuit breakers Series 8550

R. STAHL Series 8550 molded case circuit breakers boast a broad range of rated operating currents from 15 to 125 A, as well as excellent current limiting for short circuits and a high switching capacity of up to 10 kA, depending on the switched voltage. The short-circuit release threshold is ten times the nominal current. DC currents can also be switched at voltages up to 250 V DC. The components are designed to be modular and are therefore ideal for combining with the contactor, also available in this series, and overload relay to form a motor starter. Other applications are in power distribution boards.

  • Non-adjustable thermal and magnetic releases
  • Isolating function in accordance with EN 60947-2
  • International approvals for worldwide use
  • Simple replacement or expansion of your system thanks to a modular circuit breaker design
  • Padlocks provide protection against being switched on again during maintenance work
  • Ergonomically shaped operating lever guarantees that the system can be switched on and off safely
  • Large cable dia. range of the main terminals

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Product variant
Class1 Division and Zone
Rated operational voltage AC
Rated operational voltage DC
Rated operational voltage AC (NEC)
Rated operational voltage DC (NEC)
Rated operational current
Main contacts
1st auxiliary function
2nd auxiliary function
3rd auxiliary function
Min. ambient temperature
Max. ambient temperature
Connection cross-section
Connection cross-section AWG

22 Products

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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 315991
Product Type: 8550/1-MCS-GLS3-MO-100-25-000-000-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: without auxiliary contacts
Rated operational voltage AC: 12 ... 415 V
AC rated operat. voltage (NEC): 12 ... 480 V
Rated operational current: 100 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: without
2nd auxiliary function: without
3rd auxiliary function: without
Connection cross-section: 10.00 - 25.00 mm²
Connection cross-section AWG: 8 ... 4 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 315920
Product Type: 8550/1-MCS-GLS3-MO-100-25-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 415 V
AC rated operat. voltage (NEC): 12 ... 480 V
Rated operational current: 100 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 10.00 - 25.00 mm²
Connection cross-section AWG: 8 ... 4 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 315523
Product Type: 8550/1-MCS-GLS3-MO-100-95-000-000-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: without auxiliary contacts
Rated operational voltage AC: 12 ... 415 V
AC rated operat. voltage (NEC): 12 ... 480 V
Rated operational current: 100 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: without
2nd auxiliary function: without
3rd auxiliary function: without
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 315919
Product Type: 8550/1-MCS-GLS3-MO-100-95-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 415 V
AC rated operat. voltage (NEC): 12 ... 480 V
Rated operational current: 100 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 283727
Product Type: 8550/1-MCCB-GLS3-TM-100-95-AS1-FS1-S05S
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Class 1 Division / Zone: Division 2 / Zone 1
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 100 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: Shunt release
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 287846
Product Type: 8550/1-MCCB-GLS3-TM-125-95-000-000-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Class 1 Division / Zone: Division 2 / Zone 1
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: without auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 125 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: without
2nd auxiliary function: without
3rd auxiliary function: without
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 287847
Product Type: 8550/1-MCCB-GLS3-TM-030-10-000-000-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Class 1 Division / Zone: Division 2 / Zone 1
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: without auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 30 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: without
2nd auxiliary function: without
3rd auxiliary function: without
Connection cross-section: 2.50 - 10.00 mm²
Connection cross-section AWG: 14 ... 8 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 287848
Product Type: 8550/1-MCCB-GLS3-TM-060-25-000-000-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Class 1 Division / Zone: Division 2 / Zone 1
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: without auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 60 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: without
2nd auxiliary function: without
3rd auxiliary function: without
Connection cross-section: 10.00 - 25.00 mm²
Connection cross-section AWG: 8 ... 4 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 307515
Product Type: 8550/1-MCCB-GLS3-TM-060-25-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Class 1 Division / Zone: Division 2 / Zone 1
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 60 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 10.00 - 25.00 mm²
Connection cross-section AWG: 8 ... 4 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 307518
Product Type: 8550/1-MCCB-GLS3-TM-125-95-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Class 1 Division / Zone: Division 2 / Zone 1
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 125 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 307517
Product Type: 8550/1-MCCB-GLS3-TM-100-95-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Class 1 Division / Zone: Division 2 / Zone 1
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 100 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG
Please select products you want to compare Compare
Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 307516
Product Type: 8550/1-MCCB-GLS3-TM-100-95-000-000-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Class 1 Division / Zone: Division 2 / Zone 1
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: without auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 100 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: without
2nd auxiliary function: without
3rd auxiliary function: without
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 313016
Product Type: 8550/1-MCCB-GLS3-TM-063-25-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 63 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 10.00 - 25.00 mm²
Connection cross-section AWG: 8 ... 4 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 313015
Product Type: 8550/1-MCCB-GLS3-TM-040-25-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 40 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 10.00 - 25.00 mm²
Connection cross-section AWG: 8 ... 4 AWG
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Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 313388
Product Type: 8550/1-MCCB-GLS3-TM-080-95-000-000-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: without auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 80 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: without
2nd auxiliary function: without
3rd auxiliary function: without
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG
Please select products you want to compare Compare
Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 313389
Product Type: 8550/1-MCCB-GLS3-TM-110-95-000-000-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: without auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 110 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: without
2nd auxiliary function: without
3rd auxiliary function: without
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG
Please select products you want to compare Compare
Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 313421
Product Type: 8550/1-MCCB-GLS3-TM-020-10-000-000-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: without auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 20 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: without
2nd auxiliary function: without
3rd auxiliary function: without
Connection cross-section: 2.50 - 10.00 mm²
Connection cross-section AWG: 14 ... 8 AWG
Please select products you want to compare Compare
Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 313390
Product Type: 8550/1-MCCB-GLS3-TM-050-25-000-000-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: without auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 50 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: without
2nd auxiliary function: without
3rd auxiliary function: without
Connection cross-section: 10.00 - 25.00 mm²
Connection cross-section AWG: 8 ... 4 AWG
Please select products you want to compare Compare
Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 313490
Product Type: 8550/1-MCCB-GLS3-TM-030-10-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 30 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 2.50 - 10.00 mm²
Connection cross-section AWG: 14 ... 8 AWG
Please select products you want to compare Compare
Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 313502
Product Type: 8550/1-MCCB-GLS3-TM-030-95-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 30 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG
Please select products you want to compare Compare
Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 313501
Product Type: 8550/1-MCCB-GLS3-TM-030-25-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 30 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 10.00 - 25.00 mm²
Connection cross-section AWG: 8 ... 4 AWG
Please select products you want to compare Compare
Ex Compact molded case circuit breakers Series 8550 R. STAHL

Compact molded case circuit breakers Series 8550

Art. No.: 313654
Product Type: 8550/1-MCCB-GLS3-TM-063-95-AS1-FS1-0000
min. ambient temperature: -25 °C
max. ambient temperature: +70 °C
Zone Filter: Zone 1 | 2 G | Gb / Zone 2 | 3 G | Gc
Product variant: with auxiliary contacts
Rated operational voltage AC: 12 ... 690 V
AC rated operat. voltage (NEC): 12 ... 600Y/347 V
Rated operational voltage DC: 12 ... 250 V
Rated operational voltage DC (NEC): 12 ... 250 V
Rated operational current: 63 A
Main contacts: 3-pole (3 NO)
1st auxiliary function: Auxiliary contact 1 change-over contact
2nd auxiliary function: Fault signal contact 1 change-over contact
3rd auxiliary function: without
Connection cross-section: 25.00 - 95.00 mm²
Connection cross-section AWG: 4 … 4/0 AWG

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