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Siemens / ITE HJ3B175 Molded Case Circuit Breaker
- 175A
- 3 Pole
- Bolt-On
Siemens / ITE
HJ3B175
Molded Case Circuit Breaker
Brand
Siemens / ITE
SKU
HJ3B175
Quantity
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Siemens / ITE HJ3B175 - 175A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
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Description
Maintaining original panelboard configurations is simple with the Siemens HJ3B175. This 175A, 3-pole legacy MCCB provides thermal-magnetic protection for commercial and industrial electrical systems. It installs into Siemens P4 and P5 switchboards as an exact match for aging infrastructure. Choosing this original HJ frame avoids the extra cost and labor of installing adapter kits required by the HFD63B175 substitute.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | HJ3B175-R |
| Series | HJ |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 30kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P4, P5 Panelboards, Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Lugs not included |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Interchangeable Trip Unit |
Product FAQs
6 answersWhich enclosures are compatible with the HJ3B175?
This breaker is designed specifically for direct integration into legacy Siemens and ITE P4 and P5 panelboards, as well as compatible switchboards.
Does replacing an older HJ3B175 require panel modifications?
No, this is an exact drop-in replacement for aging infrastructure. Its bolt-on configuration installs directly into compatible Siemens and ITE enclosures without requiring retrofitting or adapter kits.
What is the modern substitute for the legacy HJ3B175 breaker?
The HFD63B175 is often used as a modern substitute, but installing it requires additional adapter kits. Using the original HJ3B175 avoids the extra labor and hardware costs of retrofitting your panel.
Are lug terminals included with this breaker?
No, lugs are not included. You must source the appropriate lug kits separately based on your specific wire gauge and conductor material.
How does the trip unit function on the HJ3B175?
This breaker is equipped with an interchangeable thermal magnetic trip unit. It provides fixed long-time thermal protection for overloads and an adjustable magnetic setting for instantaneous short-circuit protection.
Is the HJ3B175 suitable for DC power systems?
Yes, this breaker is rated for use in 500VDC systems, providing a 30kA interrupting capacity for direct current applications in addition to its standard AC ratings.
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