Hand-operated grip style enabling device. Underneath the rubber boot, called the trigger switch, the 440J enabling device has two three-position switches. The contacts are closed when the actuator is in the mid-position (partly depressed). The contacts are open when the actuator is in the rest (released) position and in the fully pressed position. When transitioning from fully pressed to released, the contacts remain open. The 440J meets the requirements of IEC 60947-5-8:2006, which was written to describe the performance and design requirements of three-position enabling devices. The model with the normally open contact is typically used as a jog or reset function. The safety system design must only allow the use of the jog or reset function when the trigger switch is in the mid-position.

2 N/C direct-opening action
Operating force; Position 2: 15 N approx., Position 3: 50 N max.
Direct opening force; 90 N
Maximum actuation frequency; 1200 operations per hour

Base plate included. If operation of the switch contacts is all that is needed use the holding bracket 440J-A00N. Additional accessory brackets can be added to achieve various arrangements. The 440J-A01N right angle bracket accommodates the 440K-A11238 (standard actuator) which is used with the standard Trojan 6 or Trojan T15 and the 440G-A27011 (GD2 actuator) which is used with the GD2 interlocks. With two additional screws, the right angle bracket can be mounted to the 440J enabling switch for horizontal mounting. An actuator can also be mounted for vertical use without the 440J-A01N bracket. Mounting plate 440J-A02N has multiple pre-drilled and tapped holes to facilitate mounting of a single 440K-MT (MT-GD2) or 440K-T (Trojan) interlock. Four additional through-holes at the corners allow mounting of the plate to a flat surface. The 440J-A03N accessory mounts to the enabling switch base plate and has two sets of holes to accommodate either two standard or two GD2 actuators. This arrangement is used in conjunction with the 440K-A04N accessory. The U-shaped 440J-A04N can accommodate two interlocks: either 440K-MT or 440K-T. Using the 440J-A03N plate with dual actuators, a total of eight contacts, four in each switch, can be made available for the safety and control system.

Use this enabling switch from Rockwell Automation's Allen Bradley Guardmaster range to stay safe when adjusting hazardous machinery. It's commonly needed for tasks when a device is still running, such as observations and troubleshooting or calibration, tool changes and lubrication. The switch lets you safely adjust moving parts for emergency maintenance and repair. Operators can use the trigger switch by squeezing the handle to make fast emergency stops if a hazard occurs.

• Ergonomic surface design makes the switch comfortable to hold
• Pre-mounted base plate for extra stability
• Cable strain relief to protect from damage
• Dual three-position enabling switches for versatile use

• IEC (International Electrotechnical Commission)
• EN (European Norm)
• NFPA (National Fire Protection Association)
• ANSI (American National Standards Institute)
• ISO (International Organization for Standardization)

IP66 Rated
IEC 60947-5-8:2006

With most machines, it's best to reduce speed or intensity before maintenance or repair begins. A reduced performance mode will give the operator more time to squeeze the trigger in the event of danger. The control system should be set up to ensure the machine remains in this mode for the entire time the operator is in contact.

Enabling Switch