The EX-AZM161 is a solenoid interlock switch designed for explosives atmospheres. It will ensure that sliding, hinged and removable guarding devices cannot be opened until hazardous conditions have come to an end (when used in combination with the control elements of a machine, e.g. fail-safe standstill monitors or fail-safe delay timers). They are also used for cases in which the opening of a guarding device represents a non-permissible intrusion in a production process.
The switching element with interlock on the EX-AZM161 is not physically connected to the actuator but functionally brought together or separated on switching. When the guard device is opened in the uninterlocked condition, the actuator is separated from the base unit. In the process, NC contacts are positively opened and NO contacts closed.
Interlocking is carried out by means of a latching bolt which blocks the actuator so that it cannot be withdrawn from the interlock. The machine control circuit is only enabled when the actuator has been fed into the interlock and the latching bolt is in the blocking position. This is ensured by contact monitoring of the latching bolt.

6 Contacts
130 x 114 x 30 mm
Large wiring compartment
Clamping force 2000N
Manual release
Interlock with protection against incorrect locking
High holding force
Long life
Double-insulated
Ex-certified screwed cable gland
Ex certified, EX II 3D Ex tc IIIC T80°C Dc X
4 cable entries M 16 x 1.5

Stock no. 880-1854 is a straight actuator
Stock no. 880-1858 is an actuator with magnetic latch
Stock no. 880-1867 is an actuator with ball latch
Stock no. 880-1860 is an actuator with centring guide, 150mm
Stock no. 880-1864 is an actuator with centring guide, 95mm

Actuators must be ordered separately.

EN ISO 13849-1, EN 60079-0, EN 60079-31, EN 60947-5-1, BG-GS-ET-19.

ATEX.

Use this solenoid interlock switch from Schmersal to prevent safety guards from being opened during hazardous operations. It works in conjunction with a device, such as a fail-safe delay timer, to control the opening and closing of fences, flaps or doors. The unit's interlocking function is carried out by a blocking bolt, which automatically stops withdrawal of the actuator when dangerous situations occur. It's protected against incorrect locking for improved safety levels and has the ability to both lock and unlock safety equipment for enhanced versatility.

• Designed for use with both sliding and removable safety guards for versatile use
• Meets EN ISO 13849-1 (European Norm/International Organisation for Standardisation) standards for the design and integration of safety-related parts of control systems
• ATEX (ATmosphères EXplosibles) approved for use in potentially explosive environments

• Marine and offshore industries
• Shipbuilding yards and quarries
• Mining and mineral processing

You can easily install the actuator using one-way screws to tighten it securely in place. When welding or riveting the actuator, it's important to avoid altering its insertion depth.