| Category | |
| Manufacturer Name | |
| Actuator Type | |
| Approval Agency | |
| Breaker Type | |
| Current Rating (Amps) | |
| Frequency | |
| Illumination | |
| Insulation Resistance | |
| Mounting Type | |
| Number of Poles | |
| Reset Time | |
| Voltage Rating |
The OptiFuse CBW57-EJ-4A is a low-profile, thermal circuit breaker designed for reliable overcurrent protection. It offers a current range of 3A to 30A and operates at 125/250 VAC or 32/50 VDC.
Key electrical specifications include a dielectric strength greater than 1500 VAC, an insulation resistance exceeding 100M Ω at 500 VDC, and contact endurance rated for 500 cycles at 125 VAC with 150% of rated current. The breaker features a push-to-reset actuator and a tin-plated terminal finish.
This circuit breaker is suitable for panel mounting and meets agency standards including UR, CCC, TUV, and VDE. It is also marine ignition protected to SAE J1171 and UL1500 standards, making it suitable for marine applications. The operating ambient temperature range is -10℃ to +60℃.
Designed for occasional overcurrent protection, the CBW57 series is intended for applications where prolonged trip conditions are not anticipated. Avoid contact with chemical solvents, as this can damage the device's performance.
AC: 125/250 VAC; DC: 32/50 VDC.
-10°C to 60°C.
1000A at 125/250 VAC for 3-30A, 400A at 125/250 VAC for 3-20A, 300A at 50 VDC for 3-30A.
Within 60 seconds.
CCC, CSA, cURus, TUV, UR, VDE.
Greater than 1500 VAC.
Greater than 100 MΩ at 500 VDC.