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Eaton / Cutler-Hammer K3175T Molded Case Circuit Breaker
- 175A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
K3175T
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
K3175T
Quantity
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Eaton / Cutler-Hammer K3175T - 175A 3 Pole Molded Case Circuit Breaker
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Description
Built for heavy-duty applications, the Eaton K3175T is a 175A, 3-pole molded case circuit breaker featuring a thermal-magnetic trip unit. It provides fixed thermal and adjustable magnetic protection. The bolt-on device is compatible with Eaton Series C panelboards, motor control centers, and legacy Westinghouse switchboards. It includes factory-installed line and load lugs and is cross-referenced with the KD3175. Operating at up to 600VAC, it delivers a 25kAIC rating at 240V.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | K3175T-R |
| Series | K |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 22kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Westinghouse Panelboards, Motor Control Centers, Switchboards |
| Wire Gauge | 3 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 3 AWG |
| 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 |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5.1, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit, Reverse Feed |
Product FAQs
6 answersWhat panelboards and enclosures are compatible with the K3175T?
The K3175T is a standard K-frame breaker designed for use in Eaton Series C panelboards, legacy Westinghouse panelboards, motor control centers, and switchboards.
What does the T suffix in the K3175T catalog number indicate?
In Eaton Series C nomenclature, the T suffix signifies that the circuit breaker is factory assembled with a fixed thermal-magnetic trip unit and includes standard line and load terminals.
Is the trip unit on the K3175T adjustable?
The K3175T features a thermal-magnetic trip unit with fixed thermal protection for overloads and an adjustable magnetic trip for short-circuit protection.
Can the K3175T circuit breaker be reverse fed?
Yes. Eaton K-frame circuit breakers with non-interchangeable thermal-magnetic trip units lack Line and Load markings, making them suitable for reverse feed applications.
What is the recommended lug torque for the K3175T?
For the standard 3 AWG to 350 kcmil Al/Cu lugs, the recommended tightening torque is 275 lb-in. Always verify the exact torque specification printed on the breaker label prior to termination.
Are there higher interrupting capacity alternatives to the K3175T?
Yes. If your application requires a higher fault current rating, direct K-frame upgrades include the KD3175 (35kA at 480VAC), the HKD3175 (65kA at 480VAC), and the KDC3175 (100kA at 480VAC).
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