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| Acceleration | |
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| Breaker Type | |
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| Current Rating (Amps) | |
| Illumination | |
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This E-T-A 4140 series thermal circuit breaker is a single-pole device with a push-pull manual actuation and a trip-free mechanism. It is designed for panel mounting and offers a current rating of 40A, suitable for voltage ratings of 115V AC (300 Hz to 800 Hz) and 28V DC.
The breaker operates within an ambient temperature range of -55°C to 125°C and includes temperature compensation from -55°C to 90°C. Its robust design makes it suitable for harsh conditions, with typical applications in land vehicles, aircraft, and watercraft. The device has a dielectric strength test voltage of 1,500V AC and an insulation resistance greater than 100 MΩ.
Key technical data includes an interrupting capacity of 1,500A at 115V AC and 4,000A at 28V DC. The degree of protection for the operating area is IP40, while the terminal area is IP00. It has undergone rigorous testing for vibration, shock, corrosion, and humidity to meet standards like EN 2350 and ISO 7137.
With a typical mechanical life of 5,000 operations, this circuit breaker is built for reliability. It is specified with RoHS3 compliance and MSL 1 rating. The unit weighs approximately 57g without an auxiliary contact.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The current rating is 40A.
It is rated for 115V AC (300 Hz to 800 Hz) and 28V DC.
It uses panel mounting.
The ambient temperature range is -55°C to 125°C.
The interrupting capacity at 115V AC (400 Hz) is 1,500A.
The interrupting capacity at 28V DC is 4,000A.
The typical mechanical life is 5,000 operations.