The D4BL guard lock safety door switch from Omron achieves a high level of safety using a mechanism where the lock is only released when voltage is applied to the solenoid. The mechanical lock is applied automatically when the operation key is inserted.

The switch contact is opened by a direct opening mechanism (NC contacts only) when the protective cover is opened Direct opening mechanism that is EN-approved is indicated on the switch
Auxiliary release key ensures easy maintenance and unlocks the door in the case of a power failure
Tough aluminium die-cast body incorporating a switch box with degree of protection satisfying IP67, UL, and CSA TYPE6P, 13
Equipped with a horizontal and vertical conduit opening
The mounting direction of the head can be changed to allow the Operation Key to be inserted from four directions
Conforms to EN (TUV) standards corresponding to the CE marking
Approved by UL, CSA, BIA, and SUVA standards

Actuators must be purchased separately. Stock no. 746-7208 incorporates an easy-to-see indicator for monitoring.

TUV EN60947-5-1, BIA GS-ET-19, SUVA, UL508, CSA C22.2, No.14.

This safety switch enhances machine safety by ensuring protective doors remain locked until the machinery has completely stopped operating. It features advanced locking mechanisms that ensure a high level of safety while allowing for efficient maintenance.

• An auxiliary release key facilitates easy maintenance during power outages
• Robust aluminium die-casting provides durability and IP67 protection
• The direction-mounted head allows operation key insertion from multiple angles

• Utilised with the D4BL safety switch for effective mechanical protection
• Employed in automation settings to prevent unauthorised access
• Suitable for environments where adherence to safety standards is essential
• Ideal for installations requiring emergency stop features

Regular inspections are necessary to ensure the locking mechanism operates smoothly. Check for signs of wear or damage in the operating environment and replace components as needed.

During power failures, the auxiliary release key can manually unlock the safety switch, allowing access to the machinery without compromising safety. Only authorised personnel should handle the auxiliary release key.

The switch’s robust design, with an IP67 rating, protects against dust and water ingress, making it appropriate for challenging industrial settings. However, avoid exposure to substances that may enter through the keyhole.

Adhere closely to the wiring instructions, ensuring connections meet the specified torque settings for each terminal. Using high-quality connectors and sealing methods will help maintain ingress protection levels.