D4B-1111N Datasheet, PDF (8/16 Pages) Omron Electronics LLC – Snap-action contact with certified direct opening operation certification

D4B-@N
Direct Opening Mechanism
1NO/1NC Contact (Snap-action)
Conforms to EN60947-5-1 Direct Opening (Only NC contact has a direct opening mechanism.)
1. When contact welding occurs.
Movable contact
Movable contact
blade
A
B
Plunger
2. When contacts are being pulled apart.
Safety cam directly
pushes up the
movable contact
blade.
3. When contacts are completely
pulled apart.
Fixed contact (NC)
Safety cam
1NC/1NO Contact (Slow-action)
Conforms to EN60947-5-1 Direct Opening
(Only NC contact has a direct opening mechanism.)
When contact welding occurs, the contacts are separated
from each other by the plunger being pushed in.
2NC Contact (Slow-action)
Conforms to EN60947-5-1 Direct Opening
(Both NC contacts have a direct opening mechanism.)
When contact welding occurs, the contacts are separated
from each other by the plunger being pushed in.
Contact spring
Return spring
Fixed contact (NC)
Movable contact
Plunger
Fixed contact (NO)
Contact spring
Return spring
Fixed contact (NC)
Movable contact
Plunger
Contact Form
Model
Contact
Contact form
Diagrams
Za
11-12
D4B-@1@N
1NC/1NO
(Snap-action)
13
14
13-14
ON
11
12
Stroke
Zb
D4B-@5@N
1NC/1NO
(Slow-action)
11
12
11-12
23-24
ON
23
24
Stroke
Zb
11-12
D4B-@A@N
2NC
(Slow-action)
11
12
21-22
ON
21
22
Stroke
Note: Terminal numbers are according to EN50013; contact symbols are according to IEC60947-5-1.
Explanation
Only NC contact 11-12 has a
certified direct opening
mechanism.
Terminal numbers 11-12 and
13-14 cannot be used as unlike
poles.
Only NC contact 11-12 has a
certified direct opening
mechanism.
Terminal numbers 11-12 or
23-24 can be used as unlike
poles.
Both NC contacts 11-12 and
21-22 have a certified direct
opening mechanism.
Terminal numbers 11-12 and
21-22 can be used as unlike
poles.
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