Overview
The Square D 9999 SB7 Single Power Pole is a Class 9999 auxiliary contact accessory engineered for use with Square D NEMA-sized contactors and motor starters. As a normally-closed (N.C.) contact configuration component, the 9999 SB7 provides reliable control circuit switching for industrial motor control and automation applications. This Series A unit is designed to mount externally and integrate seamlessly into existing control enclosures.
Key Features
- Class 9999 NEMA-rated design for use with NEMA sizes 00 through 7 contactors and starters
- Single normally-closed (N.C.) contact configuration for fail-safe circuit control
- Compact mounting profile suitable for field retrofit and panel expansion
- Screw terminal connection for secure, tool-free installation
- Designed for heavy-duty industrial duty cycles and reliability in demanding environments
Technical Specifications
- Manufacturer: Square D (Schneider Electric)
- Part Number: 9999 SB7
- Series: A
- Class: 9999
- Contact Configuration: 1 N.C. (Normally Closed)
- NEMA Rating: A600
- Maximum Voltage: 600 VAC
- Contact Current Rating: 10 A
- Compatible NEMA Starter Sizes: 00 to 7
- Connection Method: Screw Clamp Terminals
- Mounting: Side-mounted external field addition
- Certifications: UL Listed, CSA Certified
- Condition: New in Box
Typical Applications
- Motor control circuits requiring auxiliary N.C. contact switching
- Interlock logic for pump and compressor starter systems
- Secondary safety circuit control and holding functions
- Industrial automation control panels and motor control centers (MCCs)
- Legacy NEMA starter system upgrades and expansions
Compatibility & Replacements
Compatible With
- Square D NEMA Size 00 to 7 contactors (Class 8502, 8702, 8536, 8736)
- Square D motor starters with field-convertible auxiliary contact provisions
- Standard 120/600 VAC control circuits
- Motor Control Centers (MCCs) with Class 9999 auxiliary slots
Replaces / Drop-In Replacement For
- Original equipment Square D 9999 SB7 Series A units
- Field retrofit applications for failed or worn Class 9999 N.C. contact blocks
Works With
- Square D EasyLogic programmable relay systems
- NEMA-rated control transformers (Form F4T standard)
- Standard industrial DC and AC control circuits rated to 600 VAC
- Legacy and modern factory automation systems requiring NEMA compatibility
