Square D Q1340 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Plug-On
Quantity
Square D Q1340 - 40A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the legacy Q1 series, the Square D Q1340 offers reliable thermal-magnetic protection for commercial environments. This 40A, three-pole breaker ensures consistent performance across demanding electrical systems. Designed for plug-on installation, it fits into older Square D Q1 panelboards. Facilities looking to modernize can use the QO340 as a substitute for this frame. With a 10 kAIC rating at 240VAC, it includes the Visi-Trip indicator and is HACR rated for HVAC equipment.Specifications
| Brand | Square D |
|---|---|
| Part Number | Q1340-R |
| Series | Q1 |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | Q1 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Q1 Panelboards |
| Wire Gauge | 8 AWG - 2 AWG (Al/Cu) |
| Max Wire | 2 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Standards | CSA C22.2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Common Trip, Trip-Free Mechanism, Quick-Make/Quick-Break |
Product FAQs
7 answersWhich panelboards accept the Square D Q1340 circuit breaker?
This breaker is designed specifically for use in legacy Square D Q1 panelboards. It utilizes a plug-in connection that matches the Q1 frame busbar configuration.
What wire sizes and materials are compatible with the Q1340 terminals?
The terminal lugs accept both aluminum and copper conductors ranging from 8 AWG to 2 AWG. Ensure proper torque specifications are followed during installation.
What type of protection does the LI trip function provide on this breaker?
The LI designation indicates a thermal-magnetic trip unit that delivers Long-Time (L) protection against sustained overloads and Instantaneous (I) protection against short circuits.
How is the Q1340 breaker installed into a panelboard?
It features a plug-in mounting style, allowing it to snap directly onto the busbar of a compatible Q1 panelboard without requiring bolt-on fasteners.
Are the trip settings on the Q1340 adjustable?
No, this breaker features a fixed thermal-magnetic trip unit. The long-time and instantaneous trip thresholds are factory set and cannot be modified in the field.
Is the Square D Q1340 a current production model?
The Q1340 belongs to the legacy Q1 frame family of molded case circuit breakers. It is typically sourced for replacing existing breakers or expanding older Square D Q1 panelboards.
What is the maximum fault current the Q1340 can safely interrupt?
This breaker has an interrupting rating of 10kA at 240V AC. It must not be installed in systems where the available fault current exceeds 10,000 amps.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- JTJeff T.ReviewingSquare D Q12100 - 100A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/23/18Refurbished breaker
Found the correct breaker, it was very easy to find. Great price and shipped out on time. Definitely recommend this company.