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1SAL102378R9902 ABB MC2C310ATWD Mini Contactor Compact Control Contactor
ABB 1SAL102378R9902 MC2C310ATWD is a compact 24 V DC-operated three-pole mini contactor with a 12 A AC-3 rating at 400 V, three normally open main contacts, one normally open auxiliary contact and screw terminals.
£32.25
Why Choose the ABB 1SAL102378R9902 MC2 Mini Contactor?
The ABB 1SAL102378R9902, designated MC2C310ATWD, is a compact and dependable DC-operated mini contactor designed for switching three-phase motors and resistive loads in industrial control systems. As part of the ABB MC2 mini contactor range, it combines three normally open main poles with one normally open auxiliary contact for control, signalling and interlocking duties.
This mini contactor features a low-consumption DC coil that supports integration with electronic control equipment and automation systems. Screw terminals provide straightforward wiring, while the compact enclosure helps machine builders and panel manufacturers minimise the space required for motor-control components.
With an AC-3 operational current of 12 A at 400 V, a motor rating of 5.5 kW at 400 V and a 24 V DC control voltage, the MC2C310ATWD is suitable for compact motor starters, machinery and OEM control assemblies. Its DIN-rail mounting format enables efficient installation inside electrical panels.
Key Advantages
- Compact DC-operated mini contactor for motor and load switching.
- 12 A AC-3 operational current at 400 V.
- Controls motors rated up to 5.5 kW at 400 V.
- 24 V DC low-consumption control coil for automation applications.
- Integrated 1NO auxiliary contact for signalling and interlocking.
- Space-saving construction simplifies compact control-panel design.
Key Features
- ABB MC2 mini contactor series.
- Three normally open main contacts.
- One normally open auxiliary contact.
- 24 V DC control circuit.
- 20 A conventional free-air thermal current for the main circuit.
- 750 V rated insulation voltage.
- 6 kV rated impulse withstand voltage.
- Screw terminals and DIN-rail mounting.
Reliable DC-Controlled Switching for Industrial Machinery
DC-operated mini contactors such as the ABB MC2C allow automation controllers and low-voltage control circuits to switch motors and resistive loads reliably. Their compact dimensions help reduce panel space while maintaining the electrical performance required for industrial switching applications.
The MC2 range can be combined with compatible ABB manual motor starters, overload relays and accessories to create coordinated motor-control solutions. Its robust contact system and integrated auxiliary contact make the MC2C310ATWD suitable for machinery requiring frequent, dependable switching.
Typical Applications
- Compact motor starters and electrical control panels.
- PLC-controlled machinery and automation equipment.
- Pumps, fans and ventilation systems.
- Conveyors and material-handling equipment.
- Heating and resistive-load switching.
- OEM machinery and building-services controls.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Poles | 3-pole | |
| Power | 3 kW | |
| Current | 12 A | |
| Coil Voltage Range | 24 V | |
| Coil / Supply Voltage | 24 V DC | |
| Device Type | Mini contactor | |
| Auxiliary Contacts | 1NO | |
| Coil Type | DC | |
| Current AC-1 | 20 A | |
| Manufacturer | ABB | |
| Series | MC2 Mini Contactors | |
| Order code | 1SAL102378R9902 | |
| Model | MC2C310ATWD | |
| Product type | DC-operated mini contactor | |
| Main poles | 3 | |
| Main contact configuration | 3NO | |
| Auxiliary contact configuration | 1NO | |
| Control voltage | 24 V DC | |
| Rated operational current AC-3 | 12 A at 230 / 400 V; 10 A at 500 V; 5 A at 690 V | |
| Rated operational power AC-3 | 3 kW at 230 V; 5.5 kW at 400 / 500 V; 4 kW at 690 V | |
| Conventional free-air thermal current, main circuit | 20 A | |
| Conventional free-air thermal current, auxiliary circuit | 10 A | |
| Short-time withstand current | 96 A for 10 s | |
| Rated insulation voltage | 750 V | |
| Rated impulse withstand voltage | 6 kV | |
| Protection rating | IP20 | |
| Terminal type | Screw terminals | |
| Mounting type | DIN rail | |
| Mechanical durability | 10 million operations | |
| Ambient operating temperature | −40 to +70 °C | |
| Maximum operating altitude | 3000 m | |
| Dimensions (H × W × D) | 48 × 45 × 68 mm | |
| Weight | 0.25 kg |
Frequently Asked Questions
What is the ABB 1SAL102378R9902 used for?
This mini contactor switches three-phase motors and resistive loads in industrial machinery, automation systems and compact control panels.
What control voltage does the MC2C310ATWD require?
The contactor uses a 24 V DC control voltage.
What is the contact configuration of this mini contactor?
The MC2C310ATWD has three normally open main contacts and one normally open auxiliary contact.
What motor rating does the ABB 1SAL102378R9902 support?
It is rated for motors up to 5.5 kW at 400 V under AC-3 utilisation conditions.
Where is this mini contactor typically installed?
It is typically mounted on a DIN rail inside motor starters, machinery control panels and OEM automation assemblies.
Trusted Industrial Control from ABB
ABB MC2 mini contactors provide machine builders, panel manufacturers and automation engineers with compact, reliable switching for motors and resistive loads in demanding control applications.
