Overview
The Square D 9999SX8 auxiliary contact block is an external, field-convertible auxiliary contact kit designed for integration with NEMA motor starters and contactors. This contact kit is designed for use with NEMA Size 00 through Size 7 Type S contactors and starters. This external convertible contact is mounted on the side of a contactor or starter.
Key Features
- Provides one normally‐open (NO) and one normally‐closed (NC) isolated contact, is field-convertible between NO and NC, and is rated for 10 amps at up to 600 V AC.
- Auxiliary contact module has a NEMA A600 contact rating with a maximum voltage rating of 600VAC. Inductive break rating of 6.0 A at 120 VAC.
- Side- or field-mounted auxiliary block.
- Screw terminal connection.
- Used as part of electrical control circuits in motor control applications
Technical Specifications
The 9999SX8 meets NEMA standards for motor starter and contactor auxiliary contacts, providing reliable contact isolation and switching capability.
Typical Applications
- Motor starter and contactor interlocking
- Electrical control circuits for reversing and non-reversing motor applications
- Lighting contactor control circuits
- Industrial automation and process control systems requiring auxiliary switching
Compatibility & Replacements
Compatible With
- NEMA Size 00 through Size 7 Type S contactors and starters
- Square D / Schneider Electric Class 9999 contactor and starter series
- Type SA-SJ NEMA 00 to 7 contactor and starter
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering to ensure this auxiliary contact block matches your existing contactor or starter model and application requirements.
Works With
- Square D magnetic starters and contactors
- Standard 600 V AC control circuits
- NEMA-rated motor control systems
