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AT0

Limit Switches

Versatile Modular System
Flexibility in application - simplified stocking The modular system consists of standard and non-standard basic switches, enclosures, actuating heads and levers. The system allows the assembly of the required switch, on the spot, from the modules in stock. Therefore, if many different model switches are required, the costs in storing assembled switches can be reduced. There are available, however, any standard models completely assembled as required.

	Enclosures The enclosures are made of glass reinforced thermoplast. This enclosure design is totally insulated, corrosionresistant, has high mechanical impact strength and is extremely water, dust and oil tight.
	Actuating heads All actuating heads can be turned in 90º stops, to the position required. Also, in order to meet more applications, besides the standard actuating heads, other heads such as the angled lever roller, actuating rod and spring actuating rod are available.
	Plunger The plunger head can be actuated in the direction of the plunger axis and with a drive it can be actuated in every direction perpendicular to the plunger axis.
	Roller plunger, Roller lever If the limit switch application has a high speed operating sequence or the drive cam has a long operating stroke, these actuating heads are ideal because of their long wear rollers.
	Angled roller lever These actuating heads can be operated horizontally as well as vertically.
	Actuating heads with adjustable lever length If the mounting points of the limit switches are known during the planning of an application, but the kind of operation cam or its distance to the limit switch is not yet known, then the actuating heads with the adjustable lever or adjustable rod offer the flexibility for a final adjustment in the field.
	Spring rod actuator This model can be actuated from any direction perpendicular to the spring rod axis. The head can be used with objects with irregular shapes; the spring rod absorbs strong vibrations and, therefore, the snap-action switch is actuated only as required.
AT0- AWA Installation Sheets
Download PDF files here.

Safety Interlock Switches
The 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 hte actuator element. For IP 65 protection use cable entry clamp.
Safety Interlock Switches 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

Safety Interlock Switches AT0-xx-xxx-xFT-ZBZ/X 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	Voltage
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

Actuators for combination with the AT0...-ZBZ/X basic units
G-ZBZ	W-ZBZ	F-ZBZ	FG-ZBZ	NG-ZBZ	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 Compact Oil Tight Limit Switches
Complete Units - Narrow enclosures

Contacts		Plunger EN 50 047	Plunger Single hole mounting	Roller plunger EN 50 047	Roller plunger Single hole mounting
Normally Open	Normally Closed
1	1	AT0-11-1-I	AT0-11-1-I/ZS	AT0-11-1-I/RS	AT0-11-1-I/ZRS
1	1	AT0-11-2-I	AT0-11-2-I/ZS	AT0-11-2-I/RS	AT0-11-2-I/ZRS
2	-	AT0-20-1-I	AT0-20-1-I/ZS	AT0-20-1-I/RS	AT0-11-2-I/ZRS
-	2	AT0-02-1-I	AT0-02-1-I/ZS	AT0-02-1-I/RS	AT0-11-2-I/ZRS
1	1	AT0-11-S-I	AT0-11-S-I/ZS	AT0-11-S-I/RS	AT0-11-2-I/ZRS
Contacts		Spring rod actuator head	Roller Lever EN 50 047	Angle roller lever	Side Roller Lever EN 50 047
Normally Open	Normally Closed
1	1		AT0-11-1-I/AR	AT0-11-1-I/WR	AT0-11-1-I/R
1	1		AT0-11-2-I/AR	AT0-11-2-I/WR	AT0-11-2-I/R
2	-		AT0-20-1-I/AR	AT0-20-1-I/WR	AT0-20-1-I/R
-	2		AT0-02-1-I/AR	AT0-02-1-I/WR	AT0-02-1-I/R
1	1	AT0-11-S-I/F	AT0-11-S-I/AR	AT0-11-S-I/WR	AT0-11-S-I/R
Contacts		Adjustable roller lever	Actuating Rod
Normally Open	Normally Closed
1	1	AT0-11-1-I/V	AT0-11-1-I/H
1	1	AT0-11-2-I/V	AT0-11-2-I/H
2	-	AT0-20-1-I/V	AT0-20-1-I/H
-	2	AT0-02-1-I/V	AT0-02-1-I/H
1	1	AT0-11-S-I/V	AT0-11-S-I/H

AT0 Compact Oil Tight Limit Switches
Complete Units - Wide enclosures

Contacts		Plunger EN 50 047	Plunger Single hole mounting	Roller plunger EN 50 047	Roller plunger Single hole mounting
Normally Open	Normally Closed
1	1	AT0-11-1-IA	AT0-11-1-IA/ZS	AT0-11-1-IA/RS	AT0-11-1-IA/ZRS
1	1	AT0-11-2-IA	AT0-11-2-IA/ZS	AT0-11-2-IA/RS	AT0-11-2-IA/ZRS
2	-	AT0-20-1-IA	AT0-20-1-IA/ZS	AT0-20-1-IA/RS	AT0-20-1-IA/ZRS
-	2	AT0-02-1-IA	AT0-02-1-IA/ZS	AT0-02-1-IA/RS	AT0-02-1-IA/ZRS
1	1	AT0-11-S-IA	AT0-11-S-IA/ZS	AT0-11-S-IA/RS	AT0-11-S-IA/ZRS
Contacts		Spring rod actuator head	Roller Lever EN 50 047	Angle roller lever	Side Roller Lever EN 50 047
Normally Open	Normally Closed
1	1		AT0-11-1-IA/AR	--	AT0-11-1-IA/R
1	1		AT0-11-2-IA/AR	--	AT0-11-2-IA/R
2	-		AT0-20-1-IA/AR	--	AT0-20-1-IA/R
-	2		AT0-02-1-IA/AR	--	AT0-02-1-IA/R
1	1	AT0-11-S-IA/F	AT0-11-S-IA/AR	--	AT0-11-S-IA/R
Contacts		Adjustable roller lever	Actuating Rod
Normally Open	Normally Closed
1	1	AT0-11-1-IA/V	AT0-11-1-IA/H
1	1	AT0-11-2-IA/V	AT0-11-2-IA/H
2	-	AT0-20-1-IA/V	AT0-20-1-IA/H
-	2	AT0-02-1-IA/V	AT0-02-1-IA/H
1	1	AT0-11-S-IA/V	AT0-11-S-IA/H