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1SAH102028R9900 ABB MCRA031ATM Mini Contactor Relay 3NO 1NC Control Relay
ABB 1SAH102028R9900 MCRA031ATM mini contactor relay with 3 normally open and 1 normally closed auxiliary contacts and a 208–220 V AC control supply for industrial control applications.
£25.63
Why Choose the ABB 1SAH102028R9900 Mini Contactor Relay?
The ABB 1SAH102028R9900 is a compact and reliable mini contactor relay designed for switching control signals and small electrical loads in residential, commercial and industrial automation applications. As part of the ABB MCRA mini contactor relay series, it provides a space-efficient solution where dependable auxiliary switching performance is required.
This four-pole auxiliary contactor relay features a dimension-optimised design with screw terminals, making it suitable for control panels and electrical installations where space is limited. Its robust construction and ABB engineering provide reliable operation for modern control systems.
With a 208–220 V AC control supply and a 3 normally open + 1 normally closed contact configuration, the ABB 1SAH102028R9900 is suitable for switching control circuits and auxiliary loads in industrial automation environments.
Key Advantages
- Compact mini contactor relay designed for control applications.
- 3NO + 1NC auxiliary contact configuration for flexible circuit switching.
- 208–220 V AC coil voltage suitable for common control systems.
- Space-saving design for electrical panels and automation equipment.
- Reliable ABB switching technology for industrial applications.
- Suitable for wall or rail mounting installations.
Key Features
- ABB MCRA031ATM mini contactor relay.
- 4-pole auxiliary contact configuration.
- 3 normally open (NO) and 1 normally closed (NC) contacts.
- 208–220 V AC control supply voltage.
- Screw terminal connections.
- Compact 45 mm width design.
- DIN rail or wall mounting capability.
- Designed for switching control signals up to 6 A / 240 V AC-15.
Reliable Switching for Control Systems
Mini contactor relays such as the ABB 1SAH102028R9900 provide dependable switching of auxiliary circuits, control signals and smaller electrical loads. Their compact construction makes them ideal for applications where panel space is limited while maintaining reliable industrial performance.
The ABB MCRA series is designed for automation engineers, panel builders and electrical installers requiring efficient control solutions. The combination of compact dimensions, screw connections and flexible auxiliary contacts enables straightforward integration into industrial control systems.
Typical Applications
- Industrial automation control panels.
- Machine control systems.
- Motor control circuits.
- Signal switching applications.
- Building and commercial electrical systems.
- OEM control equipment and switchgear assemblies.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Coil Type | AC | |
| Coil Voltage Range | 200–250 V | |
| Poles | 4-pole | |
| Coil / Supply Voltage | 208 V AC, 220 V AC | |
| Device Type | Contactor relay | |
| Auxiliary Contacts | 3NO + 1NC | |
| Manufacturer | ABB | |
| Series | MCRA Mini Contactor Relays | |
| Model | 1SAH102028R9900 | |
| Product type | Mini contactor relay | |
| Catalog designation | MCRA031ATM | |
| Number of poles | 4P | |
| Auxiliary contacts | 3NO + 1NC | |
| Rated control supply voltage | 208–220 V AC | |
| Rated operational current AC-15 | 6 A at 240 V AC | |
| Rated operational current at 400 V AC | 4 A | |
| Rated operational voltage | up to 690 V AC | |
| Mounting type | DIN rail / wall mounting | |
| Connection type | Screw terminals | |
| Protection rating | IP20 | |
| Dimensions (H × W × D) | 48 × 45 × 56 mm | |
| Weight | approx. 0.17 kg |
Frequently Asked Questions
What is the ABB 1SAH102028R9900 used for?
The ABB 1SAH102028R9900 is a mini contactor relay used for switching control signals and small electrical loads in automation, commercial and industrial applications.
What contact arrangement does this relay have?
The relay has a 3 normally open and 1 normally closed auxiliary contact configuration.
What coil voltage does the ABB 1SAH102028R9900 require?
The relay operates with a 208–220 V AC control supply.
How is this mini contactor relay mounted?
The ABB 1SAH102028R9900 is suitable for DIN rail or wall mounting installations.
Where is this ABB relay typically installed?
This mini contactor relay is typically installed in industrial automation systems, machine control panels and electrical switchgear assemblies.
Trusted by Automation Professionals Worldwide
ABB MCRA mini contactor relays are widely used by electrical engineers and automation professionals to provide reliable auxiliary switching and efficient control solutions in modern industrial systems.
