Description
D4B
Limit switch with metal housing
The D4B series of limit switches in a rugged metal housing is suitable for both safety and non-safety applications due to its direct opening mechanism and TÜV approval. Furthermore with the increased temperature range and enhanced mechanical switching lifetime, the D4B is first choice for all applications from standard to demanding environments and for highest flexibility in mounting and connectivity preferences.
- Direct opening mechanism and approval by notified body
- Rugged metal housing and extended mechanical switching lifetime (snap action models)
- Terminal block for direct wiring
Specifications & ordering info
Ordering information
|
Actuator type
|
Connection method
|
Order code
|
|
1NC/1NO (snap-action)
|
1NC/1NO (slow-action)
|
2NC (slow-action)
|
|
|
Roller lever
|
Terminal block with
M20 conduit
|
D4B-4111N
|
D4B-4511N
|
D4B-4A11N
|
|
|
Adjustable roller lever
|
D4B-4116N
|
D4B-4516N
|
D4B-4A16N
|
|
|
Adjustable rod lever
|
D4B-4117N
|
D4B-4517N
|
D4B-4A17N
|
|
|
Plain
|
D4B-4170N
|
D4B-4570N
|
D4B-4A70N
|
|
|
Roller
|
D4B-4171N
|
D4B-4571N
|
D4B-4A71N
|
Specifications
|
Item
|
Snap-action
|
Slow-action
|
|
Durability
|
Mechanical
|
30,000,000 operations min.
|
10,000,000 operations min.
|
|
Electrical
|
500,000 operations min. (at a 250 VAC, 10 A resistive load)
|
|
Operating speed
|
1 mm/s to 0.5 m/s
|
|
Operating frequency
|
Mechanical
|
120 operations/min
|
|
Electrical
|
30 operations/min
|
|
Rated frequency
|
50/60 Hz
|
|
Contact resistance
|
25 mΩ max. (initial value)
|
|
Pollution degree (operating environment)
|
3 (EN60947-5-1)
|
|
Conditional short-circuit current
|
100 A (EN60947-5-1)
|
|
Conventional enclosed thermal current (Ith)
|
20 A (EN60947-5-1)
|
|
Protection against electric shock
|
Class I (with ground terminal)
|
|
Ambient temperature
|
Operating
|
-40 to 80°C (with no icing)
|
|
Degree of protection
|
IP67 (EN60947-5-1)
|
1NO/1NC Contact (Snap-action)
If metal deposition between mating contacts occurs on the NC contact side, they can be pulled apart by the shearing force and tensile force generated when part B of the safety cam or plunger engages part A of the movable contact blade. When the safety cam or plunger is moved in the direction of the arrow, the Limit Switch releases.
1NC/1NO Contact (Slow-action)
2NC Contact (Slow-action)
