ABB Bailey NPCR01 Control Relay | DPDT 5A 24V DC INFI 90

Relay Overview

This control relay provides auxiliary contact switching for Bailey INFI 90 automation systems. You can install ABB Bailey NPCR01 directly into INFI 90 cabinet relay banks. The unit offers multiple contact configurations for control circuit interlocking. It handles low-power signal switching with high reliability.

Technical Specifications

Parameter	Value
Dimensions (W x H x D)	45 mm x 35 mm x 55 mm
Weight	0.09 kg (90 grams)
Contact form	2 Form C (DPDT)
Contact material	Silver-cadmium oxide
Contact rating (resistive)	5A at 250V AC, 3A at 24V DC
Minimum switching load	10 mA at 5V DC
Coil voltage	24V DC (nominal)
Coil resistance	650 Ω ±10%
Coil power consumption	0.9 W typical
Operating time	15 ms maximum
Release time	10 ms maximum
Mechanical life	20 million operations
Electrical life	500,000 operations at rated load
Mounting type	Plug-in socket (11-pin octal)
Total components	32 discrete parts
Energy storage type	None (self-cleaning contacts)
Operating temperature	-10°C to +60°C

Relay Construction and Components

The relay contains an electromagnet with a balanced armature design. Two movable contact springs provide the DPDT switching action. Moreover, 32 discrete parts include contact springs and return springs. The silver-cadmium oxide contacts resist welding under load. Consequently, the relay provides reliable switching over many operations.

Installation Process

You can plug ABB Bailey NPCR01 into any standard 11-pin octal relay socket. The socket mounts onto DIN rails or backplates inside INFI 90 cabinets. Furthermore, a built-in LED indicator shows coil energization status clearly. A transparent cover protects the moving parts from dust ingress.

Performance Advantages

This relay switches circuits with 5A at 250V AC or 3A at 24V DC. The DPDT configuration provides two independent contact sets per relay. Therefore, one device can interlock multiple control circuits simultaneously. The plug-in design also allows quick replacement without rewiring.

Safety and Compliance

ABB Bailey NPCR01 meets CE, UL, and RoHS standards. The relay stores no electrical energy after coil de-energization. Hence, technicians can replace the unit safely without discharge delays.