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1SAH108859R9900 ABB MCRA004AT9 Mini Contactor Relay 4NC Control Relay
ABB 1SAH108859R9900 MCRA004AT9 mini contactor relay with 48 V AC coil control and 4NC auxiliary contacts for industrial automation switching applications.
£25.63
Why Choose the ABB 1SAH108859R9900 MCRA004AT9 Mini Contactor Relay?
The ABB 1SAH108859R9900 is a compact and reliable mini contactor relay designed for switching control signals and small electrical loads in industrial automation, building services and electrical control applications. As part of the ABB MCRA mini contactor relay series, it provides dependable switching performance in a space-saving format where efficient installation is required.
This AC-operated auxiliary contactor relay features a dimension-optimised four-pole design with screw terminals, making it suitable for applications where panel space is limited. The robust construction and DIN rail mounting capability allow straightforward integration into industrial control systems and automation equipment.
With a 48 V AC coil supply, 4 normally closed auxiliary contacts, and a compact rail-mounting design, the ABB 1SAH108859R9900 is ideal for switching control circuits, signalling applications and small electrical loads in industrial environments.
Key Advantages
- Compact mini contactor relay designed for industrial control applications.
- 4NC auxiliary contact configuration for reliable control switching.
- 48 V AC coil operation at 50 / 60 Hz for industrial control systems.
- Space-saving DIN rail mounting design for control panels.
- Screw terminal connections simplify installation and maintenance.
- Suitable for switching control signals and small loads up to 6 A AC-15 at 240 V AC.
Key Features
- ABB MCRA004AT9 mini contactor relay.
- 4-pole auxiliary contact arrangement.
- 4 normally closed (NC) contacts.
- 48 V AC rated control supply voltage.
- 6 A AC-15 rated operational current at 240 V AC.
- 4 A AC-15 rated operational current at 400 V AC.
- DIN rail mounting capability.
- Screw terminal connection technology.
Reliable Switching for Industrial Control Systems
Mini contactor relays such as the ABB 1SAH108859R9900 provide dependable electrical switching between control systems and auxiliary circuits. They are commonly used in automation panels, industrial machinery and electrical installations where reliable signal switching is required.
The ABB MCRA series combines compact dimensions with proven switching performance, allowing engineers and machine builders to create efficient control solutions while saving valuable cabinet space.
Typical Applications
- Industrial automation control panels.
- PLC interface and switching circuits.
- Machine building and OEM equipment.
- Control signal switching applications.
- Building automation systems.
- Electrical auxiliary control circuits.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Coil Voltage Range | 42–48 V | |
| Poles | 4-pole | |
| Coil / Supply Voltage | 48 V AC | |
| Device Type | Contactor relay | |
| Auxiliary Contacts | 4NC | |
| Coil Type | AC | |
| Manufacturer | ABB | |
| Series | MCRA Mini Contactor Relays | |
| Model | 1SAH108859R9900 | |
| Type designation | MCRA004AT9 | |
| Product type | Mini contactor relay | |
| Control voltage | 48 V AC | |
| Control frequency | 50 / 60 Hz | |
| Number of poles | 4P | |
| Auxiliary contacts | 4NC | |
| Rated operational current | 6 A | |
| Rated operational current AC-15 | 6 A at 240 V AC | |
| Rated insulation voltage | 750 V | |
| Rated operational voltage | up to 690 V AC | |
| Protection rating | IP20 terminals | |
| Mounting type | DIN rail mounting | |
| Terminal type | Screw terminals | |
| Dimensions (H × W × D) | approx. 48 × 45 × 56 mm | |
| Weight | approx. 0.17 kg |
Frequently Asked Questions
What is the ABB 1SAH108859R9900 used for?
The ABB 1SAH108859R9900 is a mini contactor relay used for switching control signals and small electrical loads in industrial and automation applications.
What contact configuration does this relay have?
The relay has 4 normally closed (NC) auxiliary contacts.
What control voltage does the ABB 1SAH108859R9900 require?
The MCRA004AT9 operates with a 48 V AC control supply at 50 / 60 Hz.
How is this contactor relay mounted?
The relay is suitable for DIN rail mounting inside electrical control cabinets and automation panels.
What type of terminals are used?
The ABB 1SAH108859R9900 uses screw terminal connections for secure electrical installation.
Trusted by Industrial Automation Engineers
ABB mini contactor relays provide compact, reliable switching solutions for industrial automation, machine building and electrical control applications where dependable performance and efficient installation are required.
