Rockwell / Allen-Bradley 440G-S36044 Spartan Guard Locking Switch

The Rockwell Allen-Bradley 440G-S36044 is a guard locking switch engineered for industrial machine safety interlocking. It locks the machine guard closed until hazardous motion ceases and power isolates, then prevents guard opening until a solenoid signal is applied. This prevents access to operational areas during unsafe machine states.

Part of the Spartan Guardmaster series, it combines durable glass-filled polyester construction with stainless steel actuation for dependable performance in demanding environments.

Technical Specifications

• Solenoid Voltage: 24V AC/DC


• Contact Configuration: 2 Normally Closed (NC) Safety Contacts, 1 Normally Open (NO) Auxiliary Contact


• Contact Rating: 2A at 24V DC


• Thermal Current: 10A


• Insulation Voltage: 500V


• Impulse Withstand Voltage: 2500V


• Utilization Category: AC-15


• Maximum Switched Load: 500V / 500VA


• Minimum Switched Load: 250V / 0.5A (AC), 24V / 2A (DC)


• Minimum Switched Current: 5 mA DC at 5V


• Safety Contact Gap: >2 mm (0.08 in.)


• Locking Force (max): 1200N (270 lbs)


• Enclosure Rating: IP67


• Housing Material: UL-approved glass-filled polyester


• Actuator Material: Stainless steel


• Mounting: Any position with 2× M5 fixings


• Conduit Entry: M20 or 1/2 in. NPT adapter


• Alignment Tolerance: ±5 mm vertical and horizontal

Key Features

• Solenoid-powered release mechanism - guard cannot open without energized signal


• Four rotatable actuator entry slots with blanking plugs for unused positions


• LED status indicator for real-time switch state visibility


• High locking force rated at 1200N maintains guard integrity under stress


• Catch kit included to align actuator and reduce solenoid stress from misalignment


• Manual release capability for emergency access


• IP67 sealed construction protects against moisture and contamination

Typical Applications Machine guarding on presses, shears, and automated production equipment where controlled access and power isolation are mandatory safety requirements.

Compatibility & Integration Designed for 24V AC/DC control circuits. Safety contacts rated 2A at 24V DC handle standard solenoid and control logic loads. M20 conduit and 1/2 in. NPT entry accommodate standard industrial wiring practices.