Square D MG24138 Miniature Circuit Breaker
- 50A
- 2 Pole
- DIN Rail
Quantity
Square D MG24138 - 50A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Tailored for industrial control panels, this 50-amp two-pole Multi9 breaker delivers precise thermal-magnetic protection. The B-curve trip profile is optimized for resistive loads and long cable runs where short-circuit currents are relatively low. This C60N series component installs onto standard 35mm DIN rails within OEM enclosures. As a legacy model, it has been officially replaced by the Acti9 M9F21250 but remains critical for existing setups. It features a trip-free mechanism.Specifications
| Brand | Square D |
|---|---|
| Series | C60N |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | DIN Rail |
| Voltage | 240VAC, 480Y/277VAC, 125VDC, 415VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC, 5kA @ 480Y/277VAC, 10kA @ 125VDC, 10kA @ 415VAC |
| 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 | B |
| 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, Trip-Free Mechanism, Reverse Feed, RoHS Compliant |
Product FAQs
5 answersIs the MG24138 rated as a branch circuit breaker or a supplementary protector?
The MG24138 is a UL 1077 recognized supplementary protector. It is designed to provide additional overcurrent protection within appliances or electrical equipment where UL 489 branch circuit protection is already provided upstream or is not required.
What trip curve does the MG24138 feature?
This breaker features a B-curve thermal-magnetic trip profile. The magnetic trip is set between 3.2 and 4.8 times the 50A rating, making it ideal for sensitive equipment, resistive loads, and long cable runs where short-circuit currents are relatively low.
Can the Square D MG24138 be reverse fed?
Yes, this Multi9 C60N miniature circuit breaker is suitable for reverse feeding. This allows for greater flexibility when routing wire in tight OEM control panels and DIN rail enclosures.
What is the direct replacement for the legacy MG24138 circuit breaker?
The MG24138 is a legacy C60N series component that has been officially replaced by the Schneider Electric Multi9 catalog number M9F21250. However, the original MG24138 is often still required for exact replacements in existing UL 508A control panels.
Does the MG24138 include a trip-free mechanism?
Yes, it features a trip-free mechanism. The internal contacts will safely open and clear a fault even if the operating toggle is physically held or locked in the ON position.
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