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The OptiFuse CBW57-ES-20A is a thermal circuit breaker designed for reliable overcurrent protection. It offers a current rating of 20A and can handle input voltages of up to 250 VAC or 32 VDC, operating within a frequency range of 50-60 Hz.
This circuit breaker features a push-to-reset actuator and a panel mount design for easy integration into various systems. It has a single pole configuration and is rated for an insulation resistance greater than 100M Ω at 500 VDC. The operating ambient temperature range is from -10℃ to +60℃.
The CBW57-ES-20A meets several agency standards, including CCC, CSA, cURus, TUV, and UR. It is designed for occasional overcurrent protection and is not intended for applications with repeated overcurrent conditions or prolonged tripping.
Key specifications include a dielectric strength greater than 1500 VAC per minute and an interrupt rating of 1000A at 125/250 VAC. The device has a tin-plated terminal finish and a black body.
It operates at 125/250VAC and 32/50VDC.
The operating ambient temperature range is -10°C to +60°C.
It is designed for panel mount installation.
Interrupt rating varies by voltage: 1000A at 125/250VAC (3-30A), 400A at 125/250VAC (3-20A), 300A at 50VDC (3-30A), and 400A at 125VAC (3-20A).
Yes, it complies with SAE J1171 and UL 1500 ignition protection requirements.
At 100% rated current: no trip. At 150%: trip within 1 hour. At 200%: trip in 5-30 seconds. At 300%: trip in 1.5-5 seconds.
It is listed under CCC, CSA, cURus, TUV, and UR agency standards.