Overview
The Allen-Bradley 700-N400A1 control relay is a 4-pole industrial AC-operated relay from the Bulletin 700-N series, engineered for motor control and general-purpose switching in industrial automation systems. With a 10-amp contact rating and 120VAC coil voltage (110V 50Hz / 120V 60Hz compatible), this relay delivers consistent performance in standard industrial control circuits. The unit is housed in a compact, low-profile design and features easy-to-identify status indication through a visible red bar, making system diagnostics straightforward for maintenance technicians.
Key Features
- 4 Normally Open (N.O.) Contacts: Allows simultaneous switching of four independent circuits from a single coil command
- Convertible Contact Cartridges: Contact configuration can be changed from N.O. to N.C. in the field without complete unit replacement
- Manual Override Capability: Enables manual coil engagement for testing and emergency situations
- Electrically Held Design: Maintains state without continuous coil power draw after initial actuation
- Visual Status Indication: Highly visible red bar provides immediate relay position confirmation
- UL 508 & cULus Certified: Meets North American industrial control standards for safety and reliability
Technical Specifications
The 700-N400A1 is rated for 10 amps continuous switching at rated voltage and features a maximum control voltage of 300V AC (50/60Hz). Its 4-pole configuration with convertible contacts makes it suitable for Bulletin 700-N motor control assemblies and general-purpose industrial switching applications. The relay is manufactured in the United States and carries UL 508 and CSA C22.2 No. 14 certifications, ensuring compliance with both regulatory and industry standards.
Typical Applications
- Motor starting and stopping control circuits
- Multi-circuit load switching and sequencing
- Interlocking and automation logic control
- Machine tool and production equipment control
- HVAC system switching and load management
- Industrial process automation and control panels
Compatibility & Replacements
The 700-N400A1 is a direct replacement for other Bulletin 700-N 4-pole configurations when contact ratings and coil voltage requirements match. This model is part of Allen-Bradley’s established Bulletin 700-N industrial relay line, ensuring compatibility with existing 700-N mounting frames and control schemes. Spare parts, contact cartridges, and technical documentation are widely available through authorized distributors. For systems requiring different pole configurations or contact ratings, alternative 700-N models (such as 2-pole or 8-pole variants) are available. Always verify coil voltage and contact configuration before substitution in active control circuits.
