Overview
The Allen-Bradley 700-N400A1 is a low-profile Type N industrial control relay from the Bulletin 700-N series, engineered for general-purpose motor control and electrical switching applications. This 4-pole, 10-ampere relay provides reliable contact switching with a 120V AC coil voltage (110V 50Hz / 120V 60Hz rated). The relay delivers dependable performance in industrial automation control systems and is suitable for mounting directly in motor control assemblies without requiring external enclosures.
Key Features
- Four normally open (4NO) contacts with 10-ampere maximum load rating
- Electrically held design with manual override capability for emergency operation
- Easy-to-identify status indication via highly visible red bar
- Convertible contact cartridges—change from N.O. to N.C. configurations without replacing the entire relay
- Screw terminal connections for secure industrial wiring
- UL 508 and CSA C22.2 No. 14 certified; cULus listed
Technical Specifications
The 700-N400A1 meets rigorous industrial standards and operates across standard North American and international power frequencies:
- Contact Configuration: 4 Normally Open (4NO)
- Maximum Contact Current Rating: 10A per contact
- Coil Voltage: 120V AC 60Hz (110V AC 50Hz)
- Maximum Voltage Rating (Load): 300V AC, 50/60Hz
- Frequency: 50/60Hz
- Terminal Style: Screw terminals
- Weight: 1.46 lbs
- Certifications: UL 508, CSA C22.2 No. 14, cULus
- Contact Cartridges: Convertible between N.O. and N.C. configurations
Typical Applications
The 700-N400A1 is widely used in industrial motor control circuits and automation systems where reliable contact switching is critical. Common applications include:
- Motor control assemblies and motor starter interlocks
- Industrial automation control logic switching
- Electrical device sequencing and protection circuits
- General-purpose industrial switching in control cabinets
- HVAC and pump control systems requiring hardwired relay logic
Compatibility & Replacements
The Allen-Bradley 700-N400A1 is part of the industry-standard Bulletin 700-N relay family. As an electrically held, convertible-contact relay, the 700-N400A1 is a direct replacement for existing Type N control relays in most motor control and industrial switching applications. Contact cartridges are field-convertible, allowing you to switch from normally open to normally closed configurations without component replacement. If you operate multiple frequency standards (50Hz or 60Hz), this relay accommodates both with the same coil winding. Verify your control voltage and load requirements before installation to ensure compatibility with your existing motor control scheme.
