Safety-door Switch
D4BS
Safety-door Switch’s Special Operation
Key Directly Pulls Apart the Contacts
from Each Other and Contributes to the
Safety of the Production Site
• Conforms to EN (TÜV) standards corresponding to
the CE marking.
• Approved by UL, CSA, BIA, and SUVA standards.
• The switch contact is opened by a direct opening
mechanism (NC contacts only) when the protective
cover is opened. The EN-approved direct opening
mechanism is indicated by
on the Switch.
• Degree of protection of the switch box: IP67
(EN60947-5-1).
• Series includes models with gold-plated contacts for
handling the micro-load range.
• Metric conduit types available.
Model Number Structure
Model Number Legend
Switch
Operation Key
D4BS -
S
D4BS - K
1
2
3
1
1. Conduit
2. Built-in Switch
1. Operation Key Type
1: PG13.5 (1 conduit)
5: 1NC/1NO (slow-action)
1: Horizontal mounting
2: G1/2 (1 conduit)
6: 1NC/NO (slow-action), gold-plated contacts
A: 2NC (slow-action)
2: Vertical mounting
3: 1/2-14NPT (1 conduit)
4: M20
3: Adjustable mounting (Horizontal)
B: 2NC (slow-action), gold-plated contacts
5: PG13.5 (3-conduit)
6: G1/2 (3-conduit)
7: 1/2-14NPT (3-conduit)
8: M20 (3-conduit)
3. Head Mounting Direction
F: Four mounting directions pos-
sible (front-side mounting at
shipping)
Ordering Information
List of Models
Switches
1NC/1NO
Type
Mounting direction
Conduit size
Pg13.5
2NC (Slow-action)
(Slow-action)
D4BS-15FS
D4BS-1AFS
D4BS-2AFS
D4BS-4AFS
D4BS-5AFS
D4BS-6AFS
D4BS-8AFS
1-conduit
G1/2
M20
D4BS-25FS
D4BS-45FS
D4BS-55FS
D4BS-65FS
D4BS-85FS
Front-side
mounting
Pg13.5
G1/2
M20
3-conduit
D-104
Safety Sensors / Components