Square D MG24543 Miniature Circuit Breaker
- 32A
- 3 Pole
- DIN Rail
Quantity
Square D MG24543 - 32A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Utilizing a specialized D-curve trip profile, this 32-amp Multi9 breaker is optimized for motor control and high-inrush industrial applications. It prevents nuisance tripping while maintaining strict overcurrent safety for heavy-duty electrical loads. The device mounts onto standard DIN rail configurations within OEM enclosures. Facilities looking for the current generation equivalent can use the M9F23332 as a substitute. It features positive contact indication and a trip-free mechanism.Specifications
| Brand | Square D |
|---|---|
| Part Number | MG24543 |
| Series | C60N |
| Amperage | 32A |
| Poles | 3 |
| Mounting Style | DIN Rail |
| Voltage | 240VAC, 480Y/277VAC, 415VAC, 440VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 5kA @ 480Y/277VAC, 10kA @ 415VAC, 6kA @ 440VAC |
| Terminal Type | Screw/Clamp Terminal |
|---|---|
| For Use With | DIN Rail Enclosures, OEM Control Panels |
| Wire Gauge | 14-2 AWG (Cu) |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Curve | D |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Padlock Attachment (Optional) |
| Standards | CSA C22.2 No 235, EN/IEC 60947-2, GB 14048.2, UL 1077 |
| Approval | CCC, CE, CSA, IEC, UL, UR |
| Temp Rating | -30C to 70C |
| Construction Features | Current Limiting, Reverse Feed, Trip-Free Mechanism, RoHS Compliant |
Product FAQs
7 answersWhat is the current generation replacement for the Square D MG24543?
The Square D M9F23332 is the direct current generation equivalent. It is a 3-pole, 32A, D-curve Multi9 C60SP miniature circuit breaker that mounts on the same standard 35 mm DIN rail.
What type of trip curve does the MG24543 feature?
This breaker utilizes a D-curve trip profile. D-curve breakers have a higher instantaneous trip threshold, typically 10 to 14 times the rated current. This makes it ideal for circuits with high inrush currents, such as motors and transformers, preventing nuisance tripping.
Can the MG24543 be reverse fed during installation?
Yes, this circuit breaker features a reverse-feed capable design. Power can be supplied to either the top or bottom terminals without compromising the thermal-magnetic trip mechanism.
What field-installable accessories are compatible with this breaker?
The Multi9 C60N series supports several modular accessories, including shunt trips, auxiliary contacts, alarm switches, undervoltage releases, and padlock attachments for lockout/tagout safety compliance.
How should the wiring be terminated on the MG24543?
The breaker is equipped with screw and clamp terminals that accept 14 AWG to 2 AWG copper (Cu) conductors. Ensure the wire is stripped to the proper length and torqued to manufacturer specifications to prevent arcing in high-vibration OEM panel environments.
Can the MG24543 be used as a primary branch circuit breaker?
No. This device is a UL 1077 recognized supplementary protector. It is intended to provide overcurrent protection within appliances or OEM electrical equipment where primary branch circuit protection is already provided upstream.
Does this breaker provide positive contact indication?
Yes, the MG24543 features positive contact indication and a trip-free mechanism. This ensures the breaker will trip safely under fault conditions even if the toggle handle is physically held in the ON position.
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