Description
LS Electric Metasol; MC-12b (Metasol Series)
A three-pole magnetic contactor rated for approximately 12 A (AC-3 duty) in the Metasol small-frame family, with available coil voltage variants (AC and DC) and accessory options. Designed for compact motor control, panel switching, and automation tasks.
The Polar Energy Assessment:
The MC-12b is a dependable, cost-efficient choice when you need a small but robust contactor for motor loads or general switching up to ~12 A. It’s got the Metasol reliability and accessory ecosystem; so you get the LS brand stuff without stepping into large-frame size. If your load is modest and panel space is moderate, this is a practical choice. Do not expect it for large motor feeders.
Pros
- Compact size and small current rating make it panel-friendly.
- Multiple coil voltage options (AC/DC) and compatibility with Metasol accessories.
- Good brand reliability (LS Electric / Metasol family) and straightforward spec.
Limitations
- Limited to ~12 A (AC-3); not suited for bigger motors or loads.
- Auxiliary and accessory modules may be required separately; less “all in one”.
- Standard protection IP20; harsh environment requires enclosure.
Typical use cases
- Motor starters for small three-phase motors (pumps, small fans) in industrial panels.
- Panel switching of moderate loads (resistive/inductive) in OEM equipment.
- Automation racks where a compact reliable contactor is needed and space is at a premium.

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