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.
