Square D 9999D01 Auxiliary Contact Block 1 N/C for 50A/90A Contactors

The Square D 9999D01 is a side-mounted auxiliary contact block designed for use with Square D 50A and 90A contactors. This auxiliary contact provides one normally closed (N/C) contact for use in control circuit applications, allowing for additional switching functionality and control logic integration.

Key Features:

• One normally closed (N/C) auxiliary contact for control circuit applications
• Designed for Square D 50A and 90A contactor models
• Side-mounted installation for easy retrofit or new installations
• Reliable contact operation for signaling and interlock functions
• Compact design minimizes panel space requirements

Auxiliary contact blocks are essential components in motor control and automation systems, providing additional switching contacts for pilot lights, alarms, interlocks, and remote signaling. The 9999D01 mounts directly to compatible Square D contactors, sharing the same mechanical operation for synchronized switching.