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The OptiFuse CBW57-EL4-20A is a thermal circuit breaker with a current rating of 20A and voltage ratings of 250 VAC and 32 VDC. It is designed for panel mounting and features a convenient push-to-reset actuator for manual reset after tripping.
This circuit breaker operates within a frequency range of 50-60 Hz and has an insulation resistance greater than 100MΩ at 500 VDC. The dielectric strength is rated at over 1500 VAC per minute. It offers various interrupt ratings depending on the voltage and current, including 1000A at 125/250 VAC for 3-30A ratings.
With an operating ambient temperature range of -10°C to +60°C, the CBW57-EL4-20A is suitable for a variety of applications. It is listed by several approval agencies, including CCC, CSA, cURus, TUV, and UR, ensuring compliance with industry standards. The device is intended for occasional overcurrent protection and should not be used in applications with repeated overcurrent conditions.
Key specifications include a reset time within 60 seconds and a contact endurance of 500 cycles at 150% of rated current. The body is black with tin-plated terminals. The part number information indicates options for bushing style and terminal configuration, though this specific model is designated EL4.
The current rating is 20A.
It is rated for 250 VAC and 32 VDC.
It features a push-to-reset actuator.
The operating ambient temperature range is -10°C to +60°C.
It is approved by CCC, CSA, cURus, TUV, and UR.
The interrupt rating is 1000A at 125/250 VAC for 3-30A ratings.