Overview
The Merlin Gerin C125N is a compact molded case circuit breaker (MCCB) rated at 125A with a 4-pole configuration. Designed for industrial and commercial electrical systems, this breaker delivers dependable circuit protection with thermal-magnetic trip characteristics. The C125N combines robust construction with adjustable protection settings, making it suitable for retrofit and new installations.
Key Features
- 125A rated current with 4-pole (4P) configuration
- Thermal trip adjustable from 94–125A; magnetic trip set at 875A (±20%)
- Compact form factor reduces panel space requirements
- Compatible with 660V AC and 250V DC systems
- Breaking capacity: 22 kA @ 380–415V AC, 25 kA @ 250V DC
- Conforms to CEI 157-1 international standard
Technical Specifications
The C125N delivers precise trip coordination through adjustable thermal and magnetic elements, allowing system integrators to tailor protection to specific load requirements.
Typical Applications
- Industrial motor control centers and distribution panels
- Heavy machinery and production line feeder protection
- Switchgear and control cabinet installations
- Marine and offshore electrical systems
- Data center and facility power distribution
Compatibility & Replacements
Compatible With
- Industrial electrical distribution systems rated 660V AC maximum
- DC systems rated 250V and below
- Standard DIN rail mounting configurations
- Switchgear assemblies and motor control centers
Replaces / Drop-In Replacement For
The C125N is a direct replacement for earlier Merlin Gerin C125N units of the same frame size and current rating. Verify compatibility with your system integrator before ordering, as pole count and trip settings must match the original installation.
Works With
- Thermal-magnetic trip coordination with industrial PLCs and motor starters
- Standard electrical panel and switchgear layouts
- Auxiliary shunt-trip and undervoltage release modules (if compatible extensions are available)
