Conventional modular contactors suffer from single-load limits and insufficient coil variants, creating heavy inventory pressure for global projects.

ONESTO’s newly launched DIN rail contactors support both AC-7a lighting and AC-7b heating loads with universal AC24V/110V/AC230V coils, covering residential,commercial, EV charging and HVAC automation scenarios.

What is ONESTO MC Series?

The ONESTO MC Series is an electromagnetic modular contactor built for standard DIN rail installation, dedicated to remote automatic control of electrical loads. Powered by an internal electromagnetic coil, it eliminates manual switching and works reliably for all common building and new energy control circuits.

WHY Our MC Series Fits Complex Global Automation

1.Dual AC-7a & AC-7b Load Compatibility

The MC Series supports both standard lighting (AC-7a) and high-power heating loads (AC-7b) in one unified model. Eliminating the need for separate lighting and heating contactors, it simplifies inventory and fits diverse residential, commercial and renewable energy control applications.

2.Universal Multi-Voltage Coils

• Factory-standard AC24V / AC110V / AC230V coil options comply with automation standards across Europe, Southeast Asia, and the Middle East.

• No custom coil modification or long lead times for cross-border automation projects.

• One unified product lineup covers multi-region orders, lowering inventory SKUs and storage costs for global distributors and engineering contractors.

Standard Built-in Reliability Features

1. Full MC1/MC2/MC3 Model Coverage

Our tiered full lineup covers all mainstream cabinet layout demands with three width specifications to maximize DIN rail space utilization:

• MC1 (18mm 1P/2P): 16A–25A for basic light and heating control

• MC2 (36mm 2P/3P): 16A–63A for medium-power commercial systems

• MC3 (54mm 3P/4P): Up to 63A with multi-contact combinations for multi-circuit automation

All models follow standard DIN rail specifications for worldwide compatibility.

2.Global Certification & Reliable Wiring Design

Fully certified to IEC/EN 61095, the MC Series meets international project standards. It supports wide-range rigid and flexible cables (1.0–25mm²), with independent terminal torque design to prevent overheating and loose connections in high-current circuits.

WHERE MC Series Can Be Deployed

ONESTO MC modular contactors deliver tailored control solutions perfectly matching different load power and cabinet layout demands via MC1/MC2/MC3 full lineup.

1. Residential Building Control Solutions

Suitable for household high-power electric load automation: underfloor heating systems, electric water heaters, whole-house smart lighting circuits.

Recommanded  model: MC1 (18mm 1P/2P, 16A–25A)

2. Commercial Centralized Automation Solutions

Designed for retail stores, hotels, apartment public areas, shopping mall centralized lighting and heating management.

Recommanded  model: MC2 (36mm 2P/3P, 16A–40A)

3. New Energy Auxiliary Circuit Solutions

Ideal for EV charging station auxiliary control circuits, solar energy storage cabinet secondary loop switching.

Recommanded  model: MC2 & MC3 (3P/4P up to 63A)

4. Industrial HVAC & Building Automation Solutions

For factory ventilation HVAC systems, large commercial central air conditioning, multi-circuit automated control cabinets.

Recommanded model: MC3 (54mm 3P/4P, max 63A multi-contact combinations)

Call To Action

• Download full MC series specification catalog

• Contact sales team for global project bulk quotations