| Category | |
| Manufacturer Name | |
| Actuator Type | |
| Approval Agency | |
| Breaker Type | |
| Current Rating | |
| Current Rating (Amps) | |
| Mounting Type | |
| Number of Poles | |
| Storage Temperature | |
| Tape & Reel | |
| Voltage Rating |
The 446-K-H-N-300A is a circuit breaker designed for electrical protection applications. Manufactured by E-T-A, it is a thermal magnetic type with a current rating of 300A and an operating voltage of 28VDC. The device is intended for chassis mounting and provides reliable circuit interruption with an interrupting capacity of 10,000A. It is approved by CSA C22.2 No 235 and UL1077 standards.
This circuit breaker is suitable for use in various electrical systems requiring high current protection. Its design includes a push-to-reset actuator, making it easy to reset after tripping. The device is rated for an ambient temperature range from -55°C to +75°C and has an IP40 degree of protection. It can withstand vibration levels of 10g and shock levels of 50g, ensuring durability in demanding environments. The device's environmental resistance includes 96 hours of salt mist exposure and 240 hours of humidity testing. Its mechanical life is approximately 2,000 operations, with a typical electrical life of 1,000 operations at rated current.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage is 28 VDC.
The current rating is 300A.
It is approved by CSA C22.2 No 235 and UL1077.
The interrupting capacity is 10,000A.
It operates from -55°C to +75°C.
The degree of protection is IP40.