Square D BDA160403 Molded Case Circuit Breaker
- 40A
- 1 Pole
- I-Line
Quantity
Square D BDA160403 - 40A 1 Pole Molded Case Circuit Breaker
New
Quantity
Description
A drop-in replacement for legacy FA16040B units, the BDA160403 is a 1-pole, 40A molded case circuit breaker from Square D. Designed with a Phase B connection, it easily installs into standard I-Line panelboards and switchboards for commercial power distribution. This PowerPact B-Frame breaker provides fixed thermal and magnetic trip functions (LI) with an interrupting capacity of 25kAIC at 240VAC. It features push-to-trip testing capabilities and is fully HACR rated for motor loads.Specifications
| Brand | Square D |
|---|---|
| Series | BDA |
| Amperage | 40A |
| 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Motor Operator |
|---|---|
| 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, Reverse Feed, Phase Connection B |
Product FAQs
8 answersWhat type of panelboards accept the BDA160403 circuit breaker?
This breaker is designed for use in Square D I-Line panelboards and switchboards. It features an I-Line plug-on connection on the line side and a mechanical lug on the load side.
How does a 1-pole I-Line breaker like the BDA160403 connect to the busbar?
It plugs directly onto the I-Line bus stack. Because it is a 1-pole breaker, it is factory-configured to connect to a specific phase on the panelboard bus.
What does the D in the BDA160403 catalog number indicate?
In the PowerPacT B-Frame series, the D designates the interrupting rating tier. For this breaker, it indicates a maximum interrupting capacity of 18kA at 480Y/277VAC and 14kA at 600Y/347VAC.
Can the BDA160403 be used in DC power applications?
Yes, this thermal-magnetic breaker is dual-rated for AC and DC systems. It is rated for up to 125VDC with a 10kA interrupting capacity.
What wire sizes are compatible with the load lug on this breaker?
The mechanical load lug accepts 14 AWG to 2/0 AWG aluminum or copper wire. Always torque the terminal to the specifications listed on the breaker faceplate.
Does the BDA160403 have adjustable trip settings?
No, this breaker features a fixed thermal and fixed magnetic trip unit. It does not allow for field adjustments to the overload or short-circuit trip thresholds.
Does the PowerPacT B-Frame replace older Square D 1-pole breakers?
Yes, the PowerPacT B-Frame is the modern replacement for legacy Square D FA and FH series breakers. While they fit the same I-Line bus, physical dimensions may vary slightly.
Does this breaker include a push-to-trip feature?
Yes, all PowerPacT B-frame circuit breakers include an integral push-to-trip button on the front cover, allowing you to manually trip the breaker to verify the mechanism is working correctly.
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