Eaton/Moeller
AT0-02-120DMT-ZBZ/X
Safety Interlock Switch

	Spring-power activated interlock switch (power required to deactivate interlock) • with interlock monitoring and auxiliary release mechanism • monitoring of door position: continuous
	Contacts		Positive Opening Clearance to IEC/EN 60 947-5-1	Control Voltage Supply to Magnetic Coil	Circuit Diagram
	Normally Open	Normally Closed
AT0-02-120DMT-ZBZ/X	0	2		24 VDC

AT0-...-ZBZ/X, Dimensions and Data

Interlock Activated	Interlock Deactivated	Door Open


Door closed and interlocked	Requires power: voltage is applied to the coil to activate interlock; quicker access possible in the event of a power loss or wire breakage. Both the N.C. enabling contact 21-22 and the N.C. door monitoring 11-12 contact are closed
To release door (deactivate interlock)	Remove voltage from the coil (A1, A2), e.g. from a motion detector. The N.C. enabling contact 21-22 opens. The N.C. monitoring contact 11-12 remains closed as long as the door remains closed.
Opening the door	Only possible once door is released (interlock deactivated). The N.C. monitoring contact 11-12 opens to indicate the open door.
Door Open	Both contacts are blocked open, even where attempts are made to tamper using basic tools.
Re-closing the door	Triple-coded actuator removes the block on the N.C. enabling contact 21-22. The N.C. door monitoring contact 11- 12 re-closes.
To interlock door	Reapply voltage to coil: 1. Actuator is locked in. 2. The N.C. enabling contact 21-22 closes. The enabling contact can only close when the door is interlocked.