Allen-Bradley 440G-S36001 GuardMaster TLS-1 GD2 Safety Interlock Switch

Allen-Bradley 440G-S36001 GuardMaster TLS-1 GD2 Safety Interlock Switch

Configured for mechanically locking a guarded access door, the Allen-Bradley 440G-S36001 (440G-S36001 safety interlock switch) provides solenoid-controlled guard locking. Its Power-to-Release mechanism keeps the guard locked when solenoid power is removed. The switch provides separate safety, auxiliary, and solenoid contacts for hardwired safety circuit integration.

Hardware Specifications

Allen-Bradley Guard Circuit Interface Characteristics

The 440G-S36001 uses discrete electrical contacts rather than a network communication interface for guard-state signaling. The two N.C. safety contacts provide the primary hardwired guard circuit path, while the N.O. auxiliary contact supplies an additional status signal.

The 24 V AC/DC solenoid controls unlocking under the Power-to-Release configuration. Removing solenoid power therefore maintains the mechanically locked guard condition.

The stainless-steel-reinforced actuator guide protects the actuator entry area against mechanical loading during repeated guard operation. The fully flexible actuator accommodates the specified switch actuation arrangement without introducing unsupported mechanical assumptions.

The IP67 and IP69K enclosure ratings define the supplied environmental protection classification. The M20 x 1.5 conduit entry provides the specified cable-entry interface for field wiring.

Frequently Asked Questions

Q: What happens to the guard lock when solenoid power is removed?

A: The Power-to-Release mechanism maintains the mechanically locked condition when 24 V AC/DC solenoid power is absent.

Q: Which electrical contacts are available for safety and auxiliary circuits?

A: The switch provides 2 N.C. safety contacts, 1 N.O. auxiliary contact, and 1 N.C. / 1 N.O. solenoid contacts.

Q: What are the specified electrical ratings for the contact system?

A: The supplied data specifies 10 A thermal current and 500 V rated insulation voltage.

Field Installation Guidelines

Mount the switch and actuator according to the mechanical alignment requirements of the GuardMaster TLS-1 GD2 assembly.

Verify that the actuator enters the switch without excessive lateral force, binding, or mechanical interference.

Use compatible M20 x 1.5 cable glands or conduit fittings for the specified conduit entry.

Route safety-circuit conductors separately from high-energy power conductors where practical to reduce electrical interference.

Terminate protective conductors and cable shields according to the applicable machine safety wiring design and local electrical requirements.

Confirm the 24 V AC/DC solenoid supply polarity and voltage compatibility before energizing the locking mechanism.

Check each N.C., N.O., and solenoid contact with the guard in its intended operating positions.

Verify that removal of solenoid power produces the intended Power-to-Release locking behavior before returning the machine to service.

Inspect actuator alignment and mechanical fastening periodically when the guard experiences repeated opening, closing, or vibration.