Eaton / Cutler-Hammer KDB3150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Panel Mount
Quantity
Eaton / Cutler-Hammer KDB3150 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for commercial and industrial power distribution, the Eaton KDB3150 provides robust overcurrent and short-circuit protection. This 3-pole, 150-amp molded case circuit breaker features fixed thermal and magnetic trip units. It installs into Eaton Series C panelboards, motor control centers, and switchboards. Rated for 65kAIC at 240VAC and 35kAIC at 480VAC, this K-Frame breaker is HACR rated and reverse feed capable, making it a dependable choice for demanding environments.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | KDB |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | K |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C 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, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Line and Load Lugs Included (TA300K) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
6 answersWhat panelboards and enclosures accept the KDB3150?
This Series C K-Frame breaker is designed for use in Eaton and Cutler-Hammer panelboards, motor control centers, and switchboards.
What wire sizes are supported by the standard lugs on this breaker?
The standard lugs accept conductor sizes ranging from 3 AWG to 350 kcmil and are rated for both aluminum and copper wire.
Is the KDB3150 rated for reverse feeding and HVAC applications?
Yes, this molded case circuit breaker is reverse feed capable and carries an HACR rating, making it suitable for heating, air conditioning, and refrigeration equipment.
Can the Eaton KDB3150 replace an older Cutler-Hammer KDB3150?
Yes. Eaton acquired Cutler-Hammer, and this Series C breaker serves as a direct, drop-in replacement for older Cutler-Hammer units sharing the exact same catalog number.
Are the thermal and magnetic trip settings adjustable on this breaker?
No, this specific model features a thermal-magnetic trip unit with fixed long-time and fixed instantaneous trip functions. It does not offer adjustable trip settings.
What are the standard safety procedures for installing this K-Frame breaker?
Always ensure the equipment is completely de-energized before installation. Verify that no voltage is present, properly torque all lug connections to manufacturer specifications, and install any required interphase barriers or terminal shields to maintain proper electrical clearances.
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