Safety-door Switch
D4BS
CSM_D4BS_DS_E_3_1
The Special Operation Key Activates a Direct
Opening Mechanism to Open the Contacts
and Shut Off Control Circuits when Protective
Doors Are Opened on Machine Tools or Other
Equipment
Note: Contact your sales representative for details
on models with safety standard certification.
• Conforms to EN (TÜV) standards corresponding to the CE marking.
• Certified by UL and CSA standards.
• The Switch contact is opened by a direct opening mechanism (NC
contacts only) when the protective cover is opened. The EN-certified
direct opening mechanism is indicated by
on the Switch.
• Malfunctions and false operation prevented by special Operation Key.
• Wide temperature range specifications: −40 to 80°C.
• Degree of protection of the switch box: IP67 (EN60947-5-1).
• Series includes models with gold-plated contacts for handling the
microload range.
Be sure to read the “Safety Precautions” on page 7 and the
“Precautions for All Safety Door Switches”.
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)
2: G1/2 (1 conduit)
3: 1/2-14NPT (1 conduit)
4: M20 (1 conduit)
5: 1NC/1NO (slow-action)
1: Horizontal mounting
6: 1NC/NO (slow-action), gold-plated contacts
A: 2NC (slow-action)
2: Vertical mounting
3: Adjustable mounting (Horizontal)
B: 2NC (slow-action), gold-plated contacts
Note: An order for the head part or the switch
part alone cannot be accepted. (The
Operation Key is sold separately.)
5: PG13.5 (3-conduit)
6: G1/2 (3-conduit)
7: 1/2-14NPT (3-conduit)
8: M20 (2-conduit)
3. Head Mounting Direction
F: Four mounting directions
possible (front-side mounting
at shipping)
Ordering Information
List of Models
Switches (Operation Keys are sold separately.)
: Models with certified direct opening contacts.
Consult with your OMRON representative when ordering any models that are not listed in this table.
Type
Mounting direction
Conduit size
Pg13.5
G1/2
1NC/1NO (Slow-action)
D4BS-15FS
2NC (Slow-action)
D4BS-1AFS
D4BS-2AFS
D4BS-3AFS
D4BS-4AFS
D4BS-5AFS
D4BS-6AFS
D4BS-7AFS
D4BS-8AFS
D4BS-25FS
1-conduit
3-conduit
1/2–14NPT
M20
D4BS-35FS
D4BS-45FS
Front-side
mounting
Pg13.5
G1/2
D4BS-55FS
D4BS-65FS
1/2–14NPT
M20
D4BS-75FS
D4BS-85FS
1