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Square D BDA160503 Molded Case Circuit Breaker
- 50A
- 1 Pole
- I-Line
Square D
BDA160503
Molded Case Circuit Breaker
Brand
Square D
SKU
BDA160503
Quantity
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Square D BDA160503 - 50A 1 Pole Molded Case Circuit Breaker
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Description
A drop-in replacement for the legacy FA14050B, the Square D BDA160503 is a 50A, 1-pole molded case circuit breaker. Part of the PowerPacT B-Frame family, it provides thermal-magnetic (LI) protection for commercial and industrial electrical systems. This unit mounts into Square D I-Line panelboards and switchboards, featuring a specific Phase B connection. Rated 25kAIC at 240V and 14kAIC at 600Y/347V, this 80% rated breaker features a trip-free mechanism and reverse feed capabilities.Specifications
| Brand | Square D |
|---|---|
| Series | BDA |
| Amperage | 50A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 600Y/347VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 208Y/120VAC, 25kA @ 240VAC, 18kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 10kA @ 125VDC |
| Frame Type | B |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Switchboards |
| Wire Gauge | 14 AWG - 2/0 AWG (Al/Cu) |
| Max Wire | 2/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch, Padlock Attachment, Rotary Handle |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No. 5, EN/IEC 60947-2, EN/IEC 60947-5-1, GB 14048.2, NEMA AB 1, NMX J-266, UL 489 |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, 80% Rated, Reverse Feed, Trip-Free Mechanism, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Product FAQs
6 answersWhat panels are compatible with the BDA160503 circuit breaker?
This breaker is built specifically for Square D I-Line panelboards and switchboards. It utilizes an I-Line plug-in connection and is configured for a Phase B connection on the bus.
Can the BDA160503 replace older Square D F-frame breakers?
Yes, the PowerPacT B-frame series is the official replacement for legacy Square D F-frame breakers. The BDA160503 serves as a direct drop-in replacement for obsolete 50A, 1-pole I-Line breakers like the FA14050B, fitting into the exact same mounting space.
How does the phase connection work for this 1-pole breaker?
In the Square D I-Line system, 1-pole breakers are factory-configured for a specific phase. The 3 at the end of the BDA160503 catalog number indicates it is built with a Phase B connection jaw.
Is the BDA160503 suitable for direct current (DC) systems?
Yes, in addition to its AC ratings, this thermal-magnetic breaker is rated for use in DC applications up to 125VDC, where it provides a 10kA interrupting capacity.
What is the continuous current rating of the BDA160503?
It is a standard 80% rated circuit breaker, meaning the continuous load should not exceed 80% of its 50A nominal rating.
Can this breaker be used for heating, air conditioning, and refrigeration equipment?
Yes, the BDA160503 is HACR rated, making it suitable for protecting HVAC and refrigeration circuits that require this specific certification.
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