D4BSSafety door switches
Safety door switch with metal housing
The D4BS line-up includes two-contact models with 1NC/1NO and2NC in a robust metal housing with 1 PG 13.5 conduit opening.
• Robust metal housing
• Line-up with two contacts: 1NC/1NO and2NC
• Standardised gold-clad contacts for high contact reliability
• Applicable for standardloads and micro loads
Type Mounting directionConduit sizeOrder code
1NC/1NO (slow-action)2NC (slow-action)
1-conduitFront-side mounting Pg13.5D4BS-15FSD4BS-1AFS
Operation keys (order separately)
Vertical mounting D4BS-K2
Degree of protection*1
Mechanical:1,000,000 operations min.
Electrical: 500,000 operations min. (10 A at 250VAC, resistive load)
Operating speed 0.1 m/s to 0.5 m/s Operating frequency30 operations/min max. Rated frequency 50/60 Hz
Contact gap2×2 mm min.
Direct opening force*3
19.61 N min. (EN60947-5-1)
Direct opening travel*320 mm min. (EN60947-5-1)
Full stroke23 mm min.
Conventional enclosed thermal current (Ith)
20 A (EN60947-5-1)
Conditional short-circuit current100 A (EN60947-5-1)
Protection against electric shock Class I (with ground terminal)
Ambient temperature Operating:–40 to 80°C (with no icing)
*1Although the switch box is protected from dust, oil, or water penetration, do not use the D4BS in places where dust, oil, water, or chemicals may penetrate through the key hole on the head, otherwise switch damage or malfunctioning may occur.
*2The durability is for an ambient temperature of 5C to 35C and an ambient humidity of 40 to 70%. Contact your Omron sales representative for more detailed information on other operating
*3These figures are minimum requirements for safe operation.
Note:The above values are initial values.