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Eaton / Cutler-Hammer CHB315 Miniature Circuit Breaker

  • 15A
  • 3 Pole
  • Bolt-On
Eaton / Cutler-Hammer CHB315
Miniature Circuit Breaker
Brand Eaton / Cutler-Hammer
SKU CHB315
Select Item Condition
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  • 15A
  • 3 Pole
  • Bolt-On

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Eaton/Cutler-Hammer CHB315 3 Pole Circuit Breaker

Eaton / Cutler-Hammer CHB315 - 15A 3 Pole Miniature Circuit Breaker

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$666.41 In Stock

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Description

Designed to safeguard commercial systems, the Eaton CHB315 is a 15A, three-pole bolt-on breaker. It features a thermal-magnetic trip unit and carries an HACR rating for dedicated HVAC circuits. This miniature breaker integrates seamlessly into Eaton Type PB and PH panelboards. The unit utilizes box lug terminals that accept 14-8 AWG wire for straightforward installation. With a 10 kAIC capacity at 240VAC, it provides dependable short-circuit defense and includes a Visi-Trip flag.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number CHB315
Series CHB
Amperage 15A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC
Phase 3
AIC Rating 10kA @ 240VAC
Fit and installation
Terminal Type Box Lugs
For Use With Type PB Panelboards, Type PH Panelboards, Meter Panels, Multi-Metering Modules
Wire Gauge 14-8 AWG
Max Wire 8 AWG
Min Wire 14 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Padlock Attachment, Handle Lock
Standards CSA C22.2 No. 5, Federal Specification W-P-131a, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Common Trip, Quick-Make/Quick-Break, Trip-Free Mechanism

Product FAQs

6 answers
Can I install the CHB315 in a standard CH loadcenter?

No. The CHB315 is a bolt-on circuit breaker designed specifically for Eaton and Cutler-Hammer Type PB and PH panelboards, meter panels, and multi-metering modules. Standard CH loadcenters require plug-on breakers.

Can I substitute a BAB series breaker for the CHB315 in a PB panelboard?

No. Although both are bolt-on breakers, BAB breakers are designed for different distribution panels and cannot be used in CHB distribution equipment. You must use a CHB series breaker for Type PB and PH panelboards.

Is the CHB315 suitable for heating and cooling equipment?

Yes, this breaker is HACR rated. It is approved for use with heating, air conditioning, and refrigeration equipment that requires an HACR-rated overcurrent protection device.

Does the CHB315 require a hold-down kit when used as a back-fed main?

No. Because the CHB315 is a bolt-on breaker, it mechanically secures directly to the panel busbar. This inherent mounting style satisfies the National Electrical Code requirement for back-fed breakers without needing an additional hold-down bracket.

How do I reset the CHB315 after a trip event?

When the breaker trips, the handle moves to a middle position between ON and OFF. To restore power, you must first push the handle completely to the OFF position to reset the internal mechanism, and then push it back to the ON position.

What type of protection does the thermal-magnetic trip unit provide?

The fixed thermal-magnetic mechanism provides two types of protection. The thermal element offers inverse-time protection against prolonged, mild overloads, while the magnetic element reacts instantaneously to clear severe short-circuit conditions.

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Reviews

4.8
Rated 4.8 out of 5 stars
Based on 4 reviews
Total 5 star reviews: 3 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
4 reviews
  • MG
    Mark G.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer CHB350 - 50A 3 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 4 out of 5 stars
    4/8/26
    Was what I needed

    This breaker was exactly what I needed. I did not give it 5 starts because it was SUPER expensive for this frame size breaker.

  • WB
    William B.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer CHB215 - 15A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/5/25
    Breakers

    Work great, fast shipping. Product as advertised. Good site

  • HC
    Hb C.
    Flag of United States
    Reviewing
    Eaton / Cutler-Hammer CHB215 - 15A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/9/21
    CHB BREAKER

    Excellent Service, Shipping Fast!!!! Super Breakers

  • MM
    Muhammad M.
    Flag of United States
    Reviewing
    Eaton / Cutler-Hammer CHB3100 - 100A 3 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    12/19/17
    Nice!

    Good experience, On time and fair price.