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Square D A1B350 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Square D
A1B350
Molded Case Circuit Breaker
Brand
Square D
SKU
A1B350
Quantity
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Square D A1B350 - 50A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
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Description
Part of the classic A1B series, this 50A molded case circuit breaker delivers reliable thermal-magnetic protection for commercial facilities. It operates on 240VAC systems and handles standard overcurrent events with a 10 kAIC rating. This breaker mounts into older Square D NA1B panelboards, making it an ideal solution for maintaining existing electrical systems. The long body design incorporates a Visi-Trip visual indicator to help electricians quickly spot tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Part Number | A1B350-R |
| Series | A1B |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D NA1B Panelboards |
| Wire Gauge | 8-4 AWG (Cu/Al) |
| Max Wire | 4 AWG |
| Min Wire | 8 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Long Body, Visual Trip Indicator |
Product FAQs
5 answersWhat panelboards are compatible with the Square D A1B350 circuit breaker?
The A1B350 is designed for bolt-on installation in legacy Square D NA1B panelboards.
Is the Square D A1B350 circuit breaker still manufactured?
No, the A1B series is an obsolete product line. It is used to maintain existing legacy NA1B panelboards without requiring a full system upgrade.
Does the A1B350 feature a visual trip indicator?
Yes, this breaker incorporates Square D's Visi-Trip visual indicator, which helps electricians quickly identify a tripped circuit in the panel.
Can I use a QOB breaker in place of the A1B350?
Yes, if a direct A1B350 is unavailable, a QOB350 can be used as a substitute in NA1B panelboards when installed with a compatible retrofit mounting kit.
How does the A1B350 connect to the panelboard bus?
It utilizes a secure bolt-on connection to attach directly to the busbars of legacy Square D NA1B panelboards, ensuring a reliable and stable electrical connection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- NLNoble L.ReviewingSquare D A1B115 - 15A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/19/21Great Service, On Time Delivery, Great Price
SuperBreakers is my a dependable source to meet my customer's requirements at a good value and with on time delivery. When you throw in great customer service, you can't beat that combination.
- CHCobe H.ReviewingSquare D A1B120 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/11/19Repeat customer
Although these breakers are refurbished they work great. It beats having to change the whole panel because of one breaker.