Schneider Electric M9F21108 Miniature Circuit Breaker
- 8A
- 1 Pole
- DIN Rail
Quantity
Schneider Electric M9F21108 - 8A 1 Pole Miniature Circuit Breaker
New
Quantity
Description
Engineered for commercial and industrial use, this 8A miniature circuit breaker belongs to the Schneider Electric Multi9 family. It features a convenient clip-on design for DIN rail mounting, making it ideal for OEM control panels. With a B-curve trip profile and a 14kAIC rating at 240VAC, this RoHS-compliant breaker delivers fast-acting, current-limiting protection for sensitive electrical circuits.Specifications
| Brand | Schneider Electric |
|---|---|
| Series | C60SP |
| Amperage | 8A |
| Poles | 1 |
| Mounting Style | DIN Rail |
| Voltage | 120VAC, 240VAC, 277VAC, 65VDC |
| Phase | 1 |
| AIC Rating | 14kA @ 120VAC, 14kA @ 240VAC, 10kA @ 277VAC, 10kA @ 65VDC |
| Frame Type | M9F |
|---|---|
| Terminal Type | Screw/Clamp Terminal |
| For Use With | DIN Rail Panels, OEM Control Panels |
| Wire Gauge | 18-4 AWG |
| Max Wire | 4 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No 235, EN/IEC 60947-2, GB 14048.2, UL 1077 |
| Approval | CCC, CE, CSA, IEC, RoHS, UR |
| Temp Rating | -30C to 70C |
| Construction Features | Current Limiting, Reverse Feed, RoHS Compliant, Mercury Free, Halogen Free |
Product FAQs
7 answersWhat type of inrush current is the M9F21108 B-curve breaker designed for?
The B-curve trip profile is designed for sensitive equipment with low inrush currents. It trips instantaneously when the current reaches 3.2 to 4.8 times the 8A rating, providing fast-acting protection for electronic controls, computers, and medical equipment.
Is the M9F21108 suitable for branch circuit protection?
No, this breaker is UL 1077 recognized for supplementary protection only. It is intended for use within equipment or control panels where branch circuit protection is already provided upstream or is not required.
What electrical auxiliaries are compatible with the Multi9 C60SP series?
The M9F21108 supports modular Multi9 accessories, including OF auxiliary contacts, SD alarm switches, MX shunt trips, and MN undervoltage releases. These accessories clip directly onto the side of the breaker for control and status signaling.
How does the M9F21108 indicate its contact status for maintenance?
The breaker features a green strip on the toggle that provides positive contact indication. This visually confirms that the physical contacts are fully open, allowing for safe downstream maintenance and operations.
Does the M9F21108 require specialized mounting hardware?
No, it features a modular architecture designed for standard 35mm DIN rail mounting. It uses a simple clip-on mechanism, which minimizes installation labor and saves space in OEM control panels.
Can the M9F21108 be used in direct current (DC) control circuits?
Yes, in addition to its AC ratings, this thermal-magnetic breaker is rated for up to 65VDC with a 10kA interrupting capacity. This makes it suitable for protecting DC power supplies and semiconductor machines.
What is the acceptable wire gauge range for the M9F21108 terminals?
The screw clamp terminals accept wire sizes from 18 AWG to 4 AWG, accommodating a variety of control wiring configurations in DIN rail panels.
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