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Eaton / Cutler-Hammer CHB320 Miniature Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
CHB320
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
CHB320
Quantity
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Eaton / Cutler-Hammer CHB320 - 20A 3 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer CHB320 - 20A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CHB320 |
| Series | CHB |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Cutler-Hammer Type PB Panelboards, Type PH Panelboards |
| Wire Gauge | 14-8 AWG |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment |
|---|---|
| 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 |
Quantity
Eaton / Cutler-Hammer CHB320 - 20A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CHB320-R |
| Series | CHB |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Cutler-Hammer Type PB Panelboards, Type PH Panelboards |
| Wire Gauge | 14-8 AWG |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment |
|---|---|
| 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 |
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Description
Part of the CHB series, the Eaton CHB320 is a 3-pole, 20-amp bolt-on circuit breaker designed for 240VAC commercial and industrial applications. It utilizes fixed thermal and magnetic trip units to deliver reliable long-time and instantaneous protection. Designed for compatibility, it installs into Cutler-Hammer Type PB and PH panelboards. The breaker accommodates 14-8 AWG wire sizes using standard box lug terminals. This HACR-rated device features a 10kAIC interrupt capacity.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CHB320 |
| Series | CHB |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Cutler-Hammer Type PB Panelboards, Type PH Panelboards |
| Wire Gauge | 14-8 AWG |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment |
|---|---|
| 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 |
Product FAQs
7 answersWhat panelboards are compatible with the CHB320 circuit breaker?
The Eaton / Cutler-Hammer CHB320 is a bolt-on breaker designed specifically for use in Cutler-Hammer Type PB and Type PH panelboards.
Can I use a plug-on CH or BR breaker in place of the CHB320?
No. The CHB320 is a bolt-on circuit breaker. Plug-on breakers like the Eaton CH or BR series have different mounting configurations and will not fit in PB or PH panelboards.
Is the CHB320 breaker HACR rated?
Yes, the CHB320 is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment that requires this specific rating.
How do I reset the CHB320 breaker after it trips?
When tripped, the handle moves to a center position between ON and OFF. To reset the breaker, you must first push the handle completely to the OFF position, and then push it back to the ON position.
Does the CHB320 feature a common trip mechanism?
Yes, this 3-pole breaker features an internal common trip. If an overload or short circuit occurs on any single phase, all three poles will trip simultaneously to disconnect power safely.
What type of wire can be used with the CHB320 breaker?
The box lugs on the CHB320 are rated for both copper and aluminum wire, accommodating sizes from 14 AWG up to 8 AWG.
Are Cutler-Hammer and Eaton CHB320 breakers the exact same product?
Yes. Eaton acquired Cutler-Hammer and continues to manufacture the CHB series under the Eaton brand. An Eaton CHB320 is the direct replacement for an older Cutler-Hammer CHB320.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 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
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Rating
4 reviews
- MGMark G.Verified BuyerReviewingEaton / Cutler-Hammer CHB350 - 50A 3 Pole Miniature Circuit BreakerI recommend this productRated 4 out of 5 stars4/8/26Was 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.
- WBWilliam B.Verified BuyerReviewingEaton / Cutler-Hammer CHB215 - 15A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/5/25Breakers
Work great, fast shipping. Product as advertised. Good site
- HCHb C.ReviewingEaton / Cutler-Hammer CHB215 - 15A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/9/21CHB BREAKER
Excellent Service, Shipping Fast!!!! Super Breakers
- MMMuhammad M.ReviewingEaton / Cutler-Hammer CHB3100 - 100A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars12/19/17Nice!
Good experience, On time and fair price.