Allen-Bradley 700-MB400 General Purpose Relay
The Allen-Bradley 700-MB400 (specifically variant 700-MB400A1S) is a highly reliable, general-purpose control relay designed for demanding industrial automation applications. Manufactured in Switzerland, this DIN-rail mountable relay features a 4 Normally Open (4 NO) contact configuration and operates with a 120V 60Hz / 110V 50Hz coil. It is engineered to meet IEC 60947 and EN 60947 standards, offering an AC-1 rating of 300V at 10A and an impulse withstand voltage (Uimp) of 8kV. Additional features include a mechanical ON/OFF status indicator for easy visual inspection, secure screw terminals accepting 18-14 AWG copper wire, and compatibility with heavy-duty NEMA A300 and Q300 ratings. It is an ideal solution for robust switching and control in single or three-phase electrical systems.
Technical Specifications:
- Brand: Allen-Bradley
- Model/Catalog Number: 700-MB400 (Variant: 700-MB400A1S)
- Contact Configuration: 4 Normally Open (4 NO)
- Coil Voltage: 120V AC 60Hz / 110V AC 50Hz
- Contact Rating (AC-1): 300V AC max, 10A
- Impulse Withstand Voltage (Uimp): 8kV
- Wire Specifications: 18-14 AWG Copper (60/75°C), 7-15 lb-in torque
- Mounting: DIN Rail Mount with retaining clip

| Brand | Allen-Bradley |
|---|---|
| Model | 700-MB400 |
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Allen-Bradley 700-MB400 General Purpose Relay
Upgrade your industrial control systems with the Allen-Bradley 700-MB400 (700-MB400A1S) General Purpose Relay. This DIN-rail mountable control relay features a 120V AC coil, 4 NO contacts, and a robust 10A 300V rating, delivering reliable and heavy-duty performance for automation applications.

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