Tesla MC120 20A Single Module Contactor 4kW 230V DIN Rail

Description

Tesla MC120. 1 Pole. 20 Amp. DIN Rail Modular Contactor. 240V Coil. 1 N/O.

The Tesla MC120 is a 1 pole 20 amp DIN rail mounted modular contactor with a 240V coil and a single normally-open (N/O) contact configuration. Compliant with IEC 61095, the MC120 is designed for control and switching of single-phase loads in residential, commercial, and industrial electrical switchboards. Mounts directly onto standard DIN rail — no special tools or adapters required. Sold individually.

• Tesla Modular Contactor — MC120
• 1 pole — single phase
• 20 amp rated
• 1 N/O contact (normally open)
• 240V AC coil
• DIN rail mounted — easy switchboard installation
• Compact single module width
• Compliant with IEC 61095
• Suitable for residential, commercial, and industrial environments
• Sold individually

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What the Tesla MC120 Modular Contactor Does

A modular contactor is an electrically operated switching device that uses a low-power control signal to open or close a high-current load circuit. The MC120 sits on the DIN rail inside a switchboard and acts as the interface between the control circuit (such as a timer, automation controller, or building management system) and the power circuit (such as lighting, a pump, or an HVAC system). When the 240V coil is energised, the N/O contact closes and the load circuit is switched on; when the coil de-energises, the contact returns to its normally-open state and the load is disconnected.

The MC120's 1 pole configuration makes it suited to single-phase load control — common applications include lighting circuits, watering and irrigation systems, ovens and commercial cooking equipment, utility motors, ventilation systems, and heat pumps. The modular DIN rail form factor means it integrates directly into standard switchboard layouts alongside circuit breakers, safety switches, and other DIN rail devices without requiring separate mounting hardware.

The Tesla modular contactor range covers 1 pole through 4 pole configurations and current ratings of 20A, 40A, and 63A — providing options for both single-phase and three-phase load switching across a wide range of power circuit types. All models mount to DIN rail and are compliant with IEC 61095.

Q: What is the difference between a normally-open (N/O) and normally-closed (N/C) contactor?
A: A normally-open (N/O) contactor — like the MC120 — has its contacts open when the coil is de-energised. The load circuit is OFF by default and switches ON when the coil is energised. A normally-closed (N/C) contactor has its contacts closed by default — the load is ON until the coil is energised, at which point the contact opens and the load switches OFF. The MC120 is N/O, which is the standard configuration for most switching applications.

Q: Can the MC120 be used with a timer or automation controller?
A: Yes — the 240V coil of the MC120 is intended to be driven by a control circuit such as a time switch, building automation controller, PLC output, or relay. The coil draws a small control current to operate the high-current load contact, providing electrical isolation between the control and power circuits.

Q: What load types is the MC120 suitable for?
A: The MC120 is suited to single-phase resistive and inductive loads including lighting circuits, irrigation and watering systems, ovens, utility motors, ventilation fans, and heat pumps — in residential, commercial, and industrial applications.

Warranty

This product is backed by an extended manufacturer warranty - click here for details.