Square D Multi 9 C60H-DC Miniature Circuit Breaker – 1-Pole, 1A, DC
The Square D (Schneider Electric) Multi 9 C60H-DC miniature circuit breaker (Model M9U21101) provides reliable overcurrent protection for low-current direct current (DC) circuits. Rated at just 1A with a 10 kA breaking capacity at 250 Vdc, this C-curve, 1-pole breaker is engineered specifically for the challenges of DC arc interruption.
Key Features
- Specifically designed for DC circuit protection
- 1-pole configuration for single-conductor DC circuits
- 1A rated current for very low-current circuit protection
- C-curve trip characteristic for circuits with moderate inrush currents
- 10 kA DC breaking capacity at 250 Vdc
- Reliable DC arc interruption capability
Specifications
- Model: M9U21101
- Manufacturer: Square D (Schneider Electric)
- Circuit Type: DC
- Poles: 1
- Amperage: 1A
- Voltage: 250 Vdc
- Breaking Capacity: 10 kA
- Trip Curve: C
Applications
Suitable for low-current DC control circuits, instrumentation, telecommunications power systems, solar PV string protection, and battery storage applications. DC-specific design ensures safe and reliable arc interruption at 250 Vdc where standard AC breakers are not suitable.



