
5
D4NS
Structure and Nomenclature
Structure
Contact Form
Diagrams Show State with Key Inserted.
* MBB (Make Before Break) contacts have an overlapping structure, so that before the normally closed contact (NC) opens, the normally open
contact (NO) closes.
Model
Contact
Contact form
Operating pattern
Remarks
D4NS-
@A@
1NC/1NO
D4NS-
@B@
2NC
D4NS-
@C@
2NC/1NO
D4NS-
@D@
3NC
D4NS-
@E@
1NC/1NO MBB
*
D4NS-
@F@
2NC/1NO MBB
*
Terminal 12
Terminal 32 (34)
Terminal 31 (33)
Terminal 32 (34)
Terminal 31 (33)
Terminal 22
Terminal 12
Terminal 21
Terminal 11
Note: The 2-conduit models have the same terminal arrangement.
Operation
key hole
Head
The head can be mounted
in four directions.
Sealing properties
The switch casing ensures IP67
D4NS-
@C@, D4NS-@D@, D4NS-@F@
D4NS-
@A@, D4NS-@B@, D4NS-@E@
11
Zb
33
12
34
11-12
33-34
ON
Extraction
completion
position
Operation
Key insertion
completion
position
Stroke
Only NC contacts 11-12 have a
certified direct opening
mechanism.
The terminals 11-12 and 33-34
can be used as unlike poles.
11
31
12
32
Zb
11-12
31-32
ON
Extraction
completion
position
Operation
Key insertion
completion
position
Stroke
NC contacts 11-12 and 31-32
have a certified direct
opening mechanism.
The terminals 11-12 and 31-32
can be used as unlike poles.
33
34
11
21
12
22
Zb
21-22
33-34
11-12
ON
Extraction
completion
position
Operation
Key insertion
completion
position
Stroke
NC contacts 11-12 and 21-22
have a certified direct
opening mechanism.
The terminals 11-12, 21-22, and
33-34 can be used as unlike
poles.
11
21
12
22
31
32
Zb
11-12
21-22
31-32
ON
Extraction
completion
position
Operation
Key insertion
completion
position
Stroke
NC contacts 11-12, 21-22, and
31-32 have a certified direct
opening mechanism.
The terminals 11-12, 21-22, and
31-32 can be used as unlike
poles.
11
33
12
34
Zb
11-12
33-34
ON
Extraction
completion
position
Operation
Key insertion
completion
position
Stroke
Only NC contacts 11-12 have a
certified direct opening
mechanism.
The terminals 11-12 and 33-34
can be used as unlike poles.
33
34
11
21
12
22
Zb
11-12
21-22
33-34
ON
Extraction
completion
position
Operation
Key insertion
completion
position
Stroke
NC contacts 11-12 and 21-22
have a certified direct opening
mechanism.
The terminals 11-12, 21-22 and
33-34 can be used as unlike poles.