Schneider C125H420FM | Circuit breaker, ComPacT NS1250H, 70kA at 415VAC, 4P, fixed, manually operated, MicroLogic 2.0 control unit, 1250A
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Schneider C125H420FM | Circuit breaker, ComPacT NS1250H, 70kA at 415VAC, 4P, fixed, manually operated, MicroLogic 2.0 control unit, 1250A

Schneider Electric
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Schneider C125H420FM | Circuit breaker, ComPacT NS1250H, 70kA at 415VAC, 4P, fixed, manually operated, MicroLogic 2.0 control unit, 1250A

  • Delivers robust 1250A current capacity for heavy-duty power systems.

  • 70kA breaking performance supports high safety in fault-prone environments.

  • Smart protection with MicroLogic 2.0 electronic unit for accurate and stable operation.

  • 4-pole fixed design fits wide-range distribution systems with full-phase safety.

  • Trusted by professionals worldwide, backed by Schneider’s engineering excellence.

Schneider C125H420FM | Circuit breaker, ComPacT NS1250H, 70kA at 415VAC, 4P, fixed, manually operated, MicroLogic 2.0 control unit, 1250A

Technical Specifications:

  • Manufacturer: Schneider Electric

  • Model Number: C125H420FM

  • Product Family: ComPacT NS1250H

  • Type: Molded Case Circuit Breaker (MCCB)

  • Rated Current (In): 1250 Amperes

  • Number of Poles: 4 (3 phases + Neutral)

  • Breaking Capacity (Icu): 70 kA at 415 VAC

  • Rated Operational Voltage (Ue): Up to 690 V AC

  • Rated Insulation Voltage (Ui): 800 V AC

  • Trip Unit: MicroLogic 2.0 electronic trip unit

  • Installation Type: Fixed version

  • Operation Mode: Manual (toggle handle)

  • Protection Functions: Overload, short-circuit with adjustable thresholds

  • Compliance: IEC 60947-2

  • Mounting Position: Vertical or horizontal, front-connected

  • Environmental Resistance: Suitable for harsh and demanding conditions

Key Features:

  • High fault-breaking capacity of 70kA ensures system protection during major short circuits.

  • MicroLogic 2.0 trip unit offers adjustable settings for customized protection levels.

  • 4-pole design supports complete line and neutral protection in power distribution networks.

  • Compact structure allows for high-performance protection in space-constrained panels.

  • Manual operation simplifies maintenance and local control without complex automation.

Typical Applications:

  1. Main incoming protection for large industrial control panels.

  2. Power distribution boards in critical infrastructure facilities like airports and hospitals.

  3. Heavy-duty motor control centers (MCCs) requiring precise electronic trip settings.

  4. Renewable energy and data centers that demand high fault-level resilience.

  5. High-rise buildings needing reliable and centralized circuit protection.

SKU: C125H420FM Categories: , , , Brand:
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Main
Range ComPacT
Product name ComPacT NS new generation
Range of product ComPacT NS630b…1600 new generation
Product or component type Circuit breaker
Device application Distribution
Number of poles 4P
Protected poles description 4D
Neutral position Left
[In] rated current 1250 A at 50 °C
[Ue] rated operational voltage 690 V AC 50/60 Hz
Network type AC
Network frequency 50/60 Hz
Suitability for isolation Yes conforming to EN/IEC 60947-2
Utilisation category Category B
Breaking capacity 85 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
70 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2
65 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2
50 kA Icu at 500/525 V AC 50/60 Hz conforming to IEC 60947-2
42 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
Breaking capacity code H 70 kA 415 V AC
Trip unit name MicroLogic 2.0
Trip unit technology Electronic
Trip unit protection functions LI
Control type Manually operated
Mounting mode Fixed
Complementary
[Ui] rated insulation voltage 800 V AC 50/60 Hz conforming to IEC 60947-2
[Uimp] rated impulse withstand voltage 8 kV conforming to IEC 60947-2
[Ics] rated service breaking capacity 52 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
52 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2
48 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
37 kA at 500/525 V AC 50/60 Hz conforming to IEC 60947-2
31 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
[Icw] rated short-time withstand current 19.2 kA 1 s conforming to IEC 60947-2
Mechanical durability 10000 cycles
Electrical durability 2000 cycles at 690 V In
3000 cycles at 690 V In/2
4000 cycles at 440 V In
5000 cycles at 440 V In/2
Power losses 44 W
Mounting support Backplate
Upside connection Front
Downside connection Front
Connection pitch 70 mm
Protection type L : for overload protection (long time)
I : for instantaneous short-circuit protection
Trip unit rating 1250 A at 50 °C
Long-time pick-up adjustment type Ir (thermal protection) Adjustable 9 settings
[Ir] long-time protection pick-up adjustment range 0.4…1 x In
Long-time protection delay adjustment type tr Adjustable 9 settings
[tr] long-time delay adjustment range 12.5…600 s at 1.5 x Ir
0.5…24 s at 6 x Ir
0.7…16.6 s at 7.2 x Ir
Thermal memory 20 mn
Instantaneous protection pick-up adjustment type Ii Adjustable
[Ii] instantaneous protection pick-up adjustment range 1.5…10 x Ir
Earth-leakage protection Without
Neutral protection setting No protection (3D)
0.5 x Ir (3D + N/2)
1 x Ir (4D)
Zone selective interlocking ZSI Without
Auxiliary contact composition 1 NO/NC
Local signalling 4 LEDs (red) for fault indication
1 LED (yellow) for overload
Width (W) 280 mm
Height (H) 327 mm
Depth (D) 147 mm
Net weight 18 kg
Environment
Standards EN/IEC 60947-2
Product certifications IECEE CB Scheme
Overvoltage category III
Electrical shock protection class Class II on front face
Pollution degree 3 conforming to IEC 60947
IP degree of protection IP40 conforming to IEC 60529
IK degree of protection IK07 conforming to EN 50102
Ambient air temperature for operation -25…70 °C
Ambient air temperature for storage -50…85 °C
Relative humidity 0…95 %
Operating altitude 0…2000 m without derating
2000 m…5000 m with derating
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 30.000 cm
Package 1 Width 40.000 cm
Package 1 Length 60.000 cm
Package 1 Weight 16.844 kg
Main
Range ComPacT
Product name ComPacT NS new generation
Range of product ComPacT NS630b...1600 new generation
Product or component type Circuit breaker
Device application Distribution
Number of poles 4P
Protected poles description 4D
Neutral position Left
[In] rated current 1250 A at 50 °C
[Ue] rated operational voltage 690 V AC 50/60 Hz
Network type AC
Network frequency 50/60 Hz
Suitability for isolation Yes conforming to EN/IEC 60947-2
Utilisation category Category B
Breaking capacity 85 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 70 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 65 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 500/525 V AC 50/60 Hz conforming to IEC 60947-2 42 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
Breaking capacity code H 70 kA 415 V AC
Trip unit name MicroLogic 2.0
Trip unit technology Electronic
Trip unit protection functions LI
Control type Manually operated
Mounting mode Fixed
Complementary
[Ui] rated insulation voltage 800 V AC 50/60 Hz conforming to IEC 60947-2
[Uimp] rated impulse withstand voltage 8 kV conforming to IEC 60947-2
[Ics] rated service breaking capacity 52 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 52 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 48 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 37 kA at 500/525 V AC 50/60 Hz conforming to IEC 60947-2 31 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
[Icw] rated short-time withstand current 19.2 kA 1 s conforming to IEC 60947-2
Mechanical durability 10000 cycles
Electrical durability 2000 cycles at 690 V In 3000 cycles at 690 V In/2 4000 cycles at 440 V In 5000 cycles at 440 V In/2
Power losses 44 W
Mounting support Backplate
Upside connection Front
Downside connection Front
Connection pitch 70 mm
Protection type L : for overload protection (long time) I : for instantaneous short-circuit protection
Trip unit rating 1250 A at 50 °C
Long-time pick-up adjustment type Ir (thermal protection) Adjustable 9 settings
[Ir] long-time protection pick-up adjustment range 0.4...1 x In
Long-time protection delay adjustment type tr Adjustable 9 settings
[tr] long-time delay adjustment range 12.5…600 s at 1.5 x Ir 0.5…24 s at 6 x Ir 0.7…16.6 s at 7.2 x Ir
Thermal memory 20 mn
Instantaneous protection pick-up adjustment type Ii Adjustable
[Ii] instantaneous protection pick-up adjustment range 1.5...10 x Ir
Earth-leakage protection Without
Neutral protection setting No protection (3D) 0.5 x Ir (3D + N/2) 1 x Ir (4D)
Zone selective interlocking ZSI Without
Auxiliary contact composition 1 NO/NC
Local signalling 4 LEDs (red) for fault indication 1 LED (yellow) for overload
Width (W) 280 mm
Height (H) 327 mm
Depth (D) 147 mm
Net weight 18 kg
Environment
Standards EN/IEC 60947-2
Product certifications IECEE CB Scheme
Overvoltage category III
Electrical shock protection class Class II on front face
Pollution degree 3 conforming to IEC 60947
IP degree of protection IP40 conforming to IEC 60529
IK degree of protection IK07 conforming to EN 50102
Ambient air temperature for operation -25…70 °C
Ambient air temperature for storage -50…85 °C
Relative humidity 0…95 %
Operating altitude 0...2000 m without derating 2000 m...5000 m with derating
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 30.000 cm
Package 1 Width 40.000 cm
Package 1 Length 60.000 cm
Package 1 Weight 16.844 kg

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