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1SAH100043R9900 ABB MCRA004ATJ Mini Contactor Relay 4NC Control Relay
ABB 1SAH100043R9900 MCRA004ATJ mini contactor relay with four normally closed auxiliary contacts designed for industrial control and automation switching applications.
£25.63
Why Choose the ABB 1SAH100043R9900 MCRA004ATJ Mini Contactor Relay?
The ABB 1SAH100043R9900 MCRA004ATJ is a compact and reliable mini contactor relay designed for switching control signals and auxiliary circuits in industrial, commercial and building automation applications. As part of the ABB MCRA mini contactor relay range, it provides dependable switching performance where high functionality and space-saving installation are required.
This dimension-optimised four-pole contactor relay features an AC-operated coil, screw terminal connections and a compact design suitable for electrical control panels and automation systems. The MCRA series is designed for applications requiring reliable auxiliary switching while reducing panel space requirements.
With a 4 normally closed auxiliary contact configuration and a 110–115 V AC control supply at 50 Hz / 110–120 V AC at 60 Hz, the ABB 1SAH100043R9900 MCRA004ATJ is suitable for switching control signals and small loads up to 6 A in industrial control applications.
Key Advantages
- Compact mini contactor relay designed for auxiliary switching applications.
- 4NC contact arrangement for control circuit applications.
- 110–115 V AC coil supply at 50 Hz and 110–120 V AC at 60 Hz.
- Space-saving design for industrial and automation control panels.
- Screw terminal connections provide secure and reliable installation.
- Suitable for switching control signals and small loads up to 6 A.
Key Features
- ABB MCRA004ATJ mini contactor relay.
- 4-pole auxiliary contact configuration.
- 4 normally closed auxiliary contacts.
- 6 A rated operational current.
- 4 A rated operational current at 400 V AC.
- AC operated coil system.
- Screw terminal connections for auxiliary circuits.
- DIN rail or wall mounting capability.
Reliable Auxiliary Switching for Industrial Control Systems
Mini contactor relays such as the ABB MCRA004ATJ provide dependable switching of control circuits, enabling automation equipment and electrical systems to manage auxiliary signals efficiently. Their compact construction makes them ideal for installations where control panel space is limited.
The ABB MCRA series is designed for engineers, panel builders and machine manufacturers requiring reliable switching, secure connections and simple integration into modern control systems. The 1SAH100043R9900 combines ABB quality with a four normally closed contact arrangement for specialised control applications.
Typical Applications
- Industrial automation control panels.
- Machine control and auxiliary circuits.
- Building automation systems.
- Electrical distribution control systems.
- Control signal switching applications.
- OEM machinery and industrial equipment.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Coil Voltage Range | 100–130 V | |
| Poles | 4-pole | |
| Coil / Supply Voltage | 110 V AC, 115 V AC, 120 V AC | |
| Device Type | Contactor relay | |
| Coil Type | AC | |
| Manufacturer | ABB | |
| Series | MCRA Mini Contactor Relays | |
| Model | MCRA004ATJ | |
| Part number | 1SAH100043R9900 | |
| Product type | Mini contactor relay | |
| Contact configuration | 4NC | |
| Number of poles | 4-pole | |
| Control voltage | 110–115 V AC (50 Hz) / 110–120 V AC (60 Hz) | |
| Rated operational current Ie | 6 A | |
| Rated operational current at 400 V | 4 A | |
| Rated insulation voltage | 750 V | |
| Rated operational voltage | up to 690 V AC | |
| Connection type | Screw terminals | |
| Mounting type | DIN rail / wall mounting | |
| Protection rating | IP20 | |
| Dimensions (H × W × D) | 48 × 45 × 56 mm | |
| Weight | approx. 0.17 kg |
Frequently Asked Questions
What is the ABB 1SAH100043R9900 used for?
The ABB 1SAH100043R9900 MCRA004ATJ is a mini contactor relay used for switching control signals and auxiliary circuits in industrial and automation applications.
What contact configuration does this relay have?
The MCRA004ATJ features a 4 normally closed (4NC) auxiliary contact configuration.
What coil voltage does the ABB MCRA004ATJ require?
The relay operates with an AC control supply of 110–115 V AC at 50 Hz and 110–120 V AC at 60 Hz.
What is the rated current of this mini contactor relay?
The ABB MCRA004ATJ supports switching applications up to 6 A.
How is the ABB 1SAH100043R9900 installed?
The relay can be installed using DIN rail or wall mounting and uses screw terminal connections.
Trusted by Industrial Automation Professionals
ABB mini contactor relays are widely used by engineers and machine builders to provide dependable auxiliary switching, compact installation and reliable control system performance.
