Square D A1L350 Miniature Circuit Breaker
- 50A
- 3 Pole
- Unit Mount
Quantity
Square D A1L350 - 50A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Description
Square D A1L350 miniature circuit breaker from the A1L series is rated 50A with 3 poles, 3-phase operation, and voltage ratings of 240VAC and 48VDC. Its interrupting rating is 10kA at 240VAC. Thermal magnetic trip technology provides long time and instantaneous overcurrent protection. It has line and load side lug terminals, a single circuit arrangement, and an operating temperature of 40°C. Neutral connection is not applicable.Specifications
| Brand | Square D |
|---|---|
| Part Number | A1L350 |
| Series | A1L |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | A1L |
|---|---|
| Terminal Type | Lugs |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Temp Rating | 40C |
|---|
Product FAQs
6 answersHow should I use the 50A rating when selecting the Square D A1L350?
The 50A rating guides selection for the circuit's load and conductor protection requirements. Check those requirements together rather than selecting the breaker from load current alone.
Can the A1L350 be selected for AC or DC circuits?
The A1L350 has voltage ratings of 240VAC and 48VDC. Use the rating that matches the circuit's supply type when evaluating its operating voltage.
How do I apply the 10kA interrupting rating?
At 240VAC, compare the available fault current at the installation point with the breaker's 10kA interrupting rating. The available fault current must not exceed that rating.
When should I select the three-pole A1L350?
Select this three-pole breaker for a three-phase circuit requiring overcurrent protection on three poles. Match the pole count and phase arrangement to the circuit being protected.
How does the thermal-magnetic trip protect the circuit?
The thermal-magnetic trip combines long-time protection for sustained overloads with instantaneous response to high-current faults. This gives the circuit overcurrent protection for both overload and short-circuit conditions.
How are incoming and outgoing conductors connected?
The A1L350 uses lug connections on both the line and load sides. Terminate incoming supply conductors at the line-side lugs and outgoing circuit conductors at the load-side lugs.
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