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Eaton/Moeller
ATO
Safety Interlock Switches


The AT0 operating head can be turned manually in 90 degree stages to match the specified actuating surface and direction of operation. Care should be taken during mounting and operation that no foreign particles penetrate the entry point of the actuator element. For IP 65 protection use cable entry clamp.

AT0-xx-1-ZB
Complete Switch, Including Actuator Element

Contacts
Normally
Open		 Normally
Closed
- 1 AT0-01-1-ZB
1 1 AT0-11-1-ZB
- 2 AT0-02-1-ZB
AT0-02-...FT-ZBZ
Personnel Protection
Door is opened Positive opening N.C. 21-22 contact opens
Open door The N.C. 21-22 contact is safely open, even
where attempts are made to tamper using basic
tools
Door is closed The triple-coded actuator element re-closes
the N.C. contact

AT0-xx-xxx-xFT-ZBZ/X
Safety Interlock Switches
with Mechanical Securing Actuator, Listed Below and Sold Separately

Contacts

Voltage

Spring-power activated
interlock switch
(power required to deactivate interlock)
• with interlock monitoring and auxiliary release mechanism
• monitoring of door position: continuous

Electro-magnet activated interlock switch
(power required to activate interlock)
• with interlock monitoring
• monitoring of door position: continuous
Normally
Open		 Normally
Closed
1 1 24 V DC AT0-11-24DFT-ZBZ/X AT0-11-24DMT-ZBZ/X
- 2 24 V DC AT0-02-24DFT-ZBZ/X AT0-02-24DMT-ZBZ/X
1 1 120 V 50/60 Hz AT0-11-120AFT-ZBZ/X AT0-11-120AMT-ZBZ/X
- 2 120 V 50/60 Hz AT0-02-120AFT-ZBZ/X AT 0-02-120AMT-ZBZ/X
1 1 230 V 50/60 Hz AT0-11-230AFT-ZBZ/X AT0-11-230AMT-ZBZ/X
1 2 230 V 50/60 Hz AT0-02-230AFT-ZBZ/X AT0-02-230AMT-ZBZ/X
AT0..-ZBZ

Actuators for combination with the AT0...-ZBZ/X basic units

G-ZBZ

W-ZBZ

F-ZBZ

 FG-ZBZ NG-ZBZ NW-ZBZ
Moeller G-ZBZ Moeller W-ZBZ Moeller F-ZBZ Moeller FG-ZBZ Moeller NG-ZBZ Moeller NW-ZBZ
Straight actuator for sliding doors Angled actuator for swing doors
≥ 250 mm width		 Angled flexible actuator for doors
which do not close precisely		 Straight flexible actuator for doors
which do not close precisely		 Straight actuator with overlap,
with increased tolerance in the direction of closing
 		 Angled actuator with overlap,
with increased tolerance in the direction of closing
 
AT0-02-...FT-ZBZ
Personnel Protection

 
Door closed and interlocked Requires no power:
interlock also remains active under power loss
or wire breakage Interlocked door = safe state
N.C. enabling contact 21-22 is closed and allows
an operation e.g. machine run, to start
To release door (deactivate interlock) Apply voltage to the coil (A1, A2), e.g. from a
motion detector. The N.C. enabling contact
21-22 opens. The N.C. door monitoring contact
11-12 remains closed as long as the door
remains closed.
Opening the door Only possible once it is released. The N.C. door monitoring contact 11-12 opens to indicate the open door.
Door is open Only possible once it is released. The N.C. door monitoring contact 11-12 opens to indicate the open door.
Re-closing the door Both contacts are blocked open, even where attempts are made to tamper using basic tools
To interlock door N.C. enabling contact 21-22. The N.C. door
monitoring contact 11-12 re-closes.
Remove voltage from 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

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