Overview
The Square D 9007 AB-21 is a heavy-duty pilot duty snap switch from the Class 9007 series, purpose-built for industrial control circuits. This snap-action switch delivers fast, reliable contact closure with minimal maintenance, making it a trusted choice for equipment control, safety interlocks, and process automation in manufacturing and industrial environments.
Key Features
- Snap-action contact mechanism for positive, repeatable switching
- Cast zinc body construction for durability and corrosion resistance
- Silver snap-action contacts ensure low contact resistance and long life
- Pilot duty rated — ideal for controlling electromagnetic coils, solenoids, and relay circuits
- Compact, modular design fits standard industrial mounting configurations
- IEC and NEMA compliant for broad industrial system compatibility
Technical Specifications
- Voltage Rating: 600 VAC
- Current Rating: 15 A
- Contact Type: Single Pole Double Throw (SPDT)
- Contact Action: Snap-action (direct opening)
- Body Material: Cast zinc with epoxy powder coating
- Contact Material: Silver
- Enclosure Rating: NEMA 2, 4, 13 / IP67
- Duty Type: AC Pilot Duty
- Standard Compliance: IEC 60947-5-1, UL, CSA
Typical Applications
- Control circuits for motors, solenoids, and electromagnetic devices
- Limit switch and position sensing applications
- Equipment interlocks and safety circuits
- Process automation and machine tool control
- Industrial machinery and conveyor systems
- HVAC and building automation systems
Compatibility & Replacements
Compatible With
- Square D motor starters and contactors
- Square D control relays and relay modules
- Telemecanique/Square D control panels and enclosures
- Standard industrial 120V/240V control circuits
- IEC and NEMA-compliant automation systems
Replaces / Drop-In Replacement For
- Earlier versions of Square D 9007 AB-series snap switches
- Verify compatibility with your system integrator before ordering for specific legacy equipment
Works With
- Square D/Telemecanique control system architectures
- IEC 60947-5-1 compliant control circuits
- Direct switching of low-power coil loads (200W typical maximum)
- Modular contact configurations in plug-in and non-plug-in mounting styles
