ITE Siemens HJ3T225 ITE Trip Unit
- 225
- 3 Pole
Quantity
ITE HJ3T225 Trip Unit
Re-Certified
Quantity
Description
ITE HJ3T225 Trip Unit
ITE HJ3T225 is a 3 Pole trip unit with a current rating of 225 Amps and a voltage rating of 600V. It has a bolt-on connection type and it is used for HJ molded case circuit breaker frames.
Specifications
| Amperage | 225 A |
|---|---|
| Voltage | 600V |
| Functions | Long Time and Instantaneous Trip |
| Protection | Standard |
| Poles | 3 |
|---|
| Connection Type | Bolt-On |
|---|---|
| For Use With | HJ Molded Case Circuit Breaker Frames |
| Configuration | Single |
| Series | HJ |
|---|---|
| Brand | ITE Siemens |
| MPN | HJ3T225-R |
| UPC | 782451082681 |
Product FAQs
8 answersWhich specific breaker frame is this trip unit used with?
It is designed for the 400-amp ITE and Siemens HJ frame, commonly paired with the HJ3F400 molded case circuit breaker frame.
Can I use this 225A trip unit to downgrade a larger breaker?
Yes, installing this unit in a 400A HJ frame will effectively limit the continuous current rating of that breaker to 225 amps.
What type of protection does the HJ3T225 provide?
It is a thermal-magnetic trip unit providing Long-Time and Instantaneous (LI) protection functions for overload and short-circuit conditions.
What is the instantaneous trip adjustment range for this unit?
The magnetic instantaneous trip setting is adjustable from 960 to 2000 amps.
What interrupting ratings (AIC) does the breaker have with this trip unit installed?
When installed in a standard HJ frame, the assembly typically provides interrupting ratings of 65kA at 240V, 35kA at 480V, and 25kA at 600V.
Can this trip unit be used in both ITE and Siemens breakers?
Yes, the HJ3T225 is compatible with legacy ITE, Gould, and Siemens HJ frame circuit breakers, as the product line transitioned through these manufacturers.
How does this trip unit install into the breaker frame?
It bolts directly into the internal bus connections of the HJ frame. Use the manufacturer specified torque values when securing the internal bolts to ensure proper contact.
What safety precautions are required when replacing the trip unit?
Always verify that the circuit breaker is completely de-energized and isolated from all power sources before opening the frame to replace or adjust the trip unit.
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