Schneider Electric M9F21250 Miniature Circuit Breaker
- 50A
- 2 Pole
- DIN Rail
Quantity
Schneider Electric M9F21250 - 50A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Built for commercial and industrial control systems, this 50-amp Multi9 C60SP supplementary protector safeguards sensitive equipment. It serves as an excellent localized defense mechanism downstream from the main branch circuit breaker. The device mounts onto standard 35mm DIN rails inside OEM equipment and control enclosures. It accepts 18-2 AWG conductors through secure screw clamp terminals. With a 10kA interrupting capacity at 240VAC, it includes positive contact indication.Specifications
| Brand | Schneider Electric |
|---|---|
| Series | C60SP |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | DIN Rail |
| Voltage | 240VAC, 480Y/277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC, 5kA @ 480Y/277VAC, 10kA @ 125VDC |
| Terminal Type | Screw/Clamp Terminal |
|---|---|
| For Use With | DIN Rail Panels, OEM Control Panels |
| Wire Gauge | 18-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 18 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Curve | B |
| Trip Adjustability | Fixed |
| Available Options | Auxiliary Switch, Alarm Switch, Shunt Trip, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No 235, EN/IEC 60947-2, GB 14048.2, UL 1077 |
| Approval | CCC, CE, CSA, IEC, UR |
| Temp Rating | -30C to 70C |
| Construction Features | Current Limiting, Reverse Feed, Common Trip, RoHS Compliant, Mercury Free |
Product FAQs
6 answersIs the Schneider Electric M9F21250 rated as a branch circuit breaker or a supplementary protector?
The M9F21250 is part of the Multi9 C60SP series and is recognized as a UL 1077 supplementary protector. It is not a UL 489 branch circuit breaker and must be used in conjunction with an upstream branch-rated overcurrent device.
What trip curve does the M9F21250 supplementary protector feature?
This device features a B-curve trip profile. B-curve protectors are designed to trip between 3 and 5 times the rated current, making them ideal for resistive loads or applications with very low inrush currents, such as PLCs and sensitive control circuits.
Does the M9F21250 require a specific backplate for installation?
No, this Multi9 C60SP breaker does not use a traditional backplate. It is designed exclusively for standard 35mm DIN rail mounting, allowing it to snap directly onto the rail in OEM control panels.
Do I need special lugs to terminate 2 AWG wire on the M9F21250?
No, the factory-installed screw clamp terminals on this breaker are designed to accept bare wire from 18 AWG up to 2 AWG directly. Ensure the wire is stripped to the correct length and torqued to the manufacturer specifications.
What is the difference between the M9F21250 and the M9F22250?
While both are 50A, 2-pole C60SP supplementary protectors, the M9F21250 features a B-curve trip profile for highly sensitive loads. The M9F22250 features a C-curve trip profile, which allows for moderate inrush currents typical of small motors or transformers.
Can the M9F21250 be used as a standalone disconnect for a motor load?
No. Because it is a UL 1077 supplementary protector, it cannot be used as a primary branch circuit disconnect or standalone motor branch circuit protection. It is intended to provide additional, localized protection within equipment where branch protection is already provided upstream.
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