Small Safety Limit Switch D4F

• An incredibly small limit switch with a direct opening mechanism (four-contact construction model).

• High-sensitivity safety limit switch.

• Built-in switches with two- or four-contact construction are available.

• Degree of protection: IP67

• Conforms to EN115-1, EN81-1 and EN81-2. (slow-action models only)

• Certified standards: UL, EN (TÜV), and CCC


Standards and EC Directives

Conforms to the following EC Directives:

• Machinery Directive
• Low Voltage Directive
• EN50047
• EN60204-1
• EN ISO 14119
• GS-ET-15

Certified Standards


Certification body Standards File No.
TÜV SÜD EN60947-5-1
(certified direct opening)
UL *2 UL508
CSA C22.2 No.14
CQC (CCC) *3 GB/T14048.5 *1


*1. Contact your OMRON sales representative.
*2. Certification has been obtained for CSA C22.2 No. 14 under UL.
*3. Ask your OMRON representative for information on certified models.

Certified Standard Ratings

TÜV (EN60947-5-1), CCC (GB/T14048.5)


Item AC-15 DC-13
Rated operating current (Ie) 0.75 A 0.27 A
Rated operating voltage (Ue) 240 V 250 V


Note: Use a 10 A fuse type gI or gG that conforms to IEC60269 as a short-circuit protection device.

UL/CSA (UL508, CSA C22.2 No. 14)



Rated voltage Carry current Current (A) Volt-amperes (VA)
Make Break Make Break
120 VAC
240 VAC
2.5 A 15
1,800 180




Rated voltage Carry current Current (A) Volt-amperes (VA)
Make Break Make Break
125 VDC
250 VDC
2.5 A 0.55
69 69




Degree of protection *1 IP67 (EN60947-5-1)
Durability *2 Mechanical 10,000,000 times min.
Electrical 1,000,000 times min. (4 mA resistive load at 24 VDC, 4 circuits)
150,000 times min. (1 A resistive load at 125 VAC, 2 circuits/4 mA resistive load at 24
VDC, 2 circuits) *3
Operating speed 1 mm/s to 0.5 m/s
Operating frequency Mechanical 120 operations/minute
Electrical 30 operations/minute
Contact resistance *5 300 mΩ max. (with 1 m cable), 500 mΩ max. (with 3 m cable), 700 m Ωmax. (with 5 m
Minimum applicable load *4 4 mA resistive load at 24 VDC, 4 circuits (N-level reference value)
Rated insulation voltage (Ui) 250 V
Rated frequency 50/60 Hz
Protection against electric shock Class I (with a ground wire)
Pollution degree (operating environment) 3 (EN60947-5-1)
Impulse withstand
Between terminals
of same polarity
2.5 kV
Between terminals
of different polarity
4 kV
Between each
terminal and ground
4 kV
Insulation resistance 100 MΩ min. (at 500 VDC) between terminals of the same polarities, between terminals
of different polarities, between current-carrying metal parts and grounds, and between
each terminal and non-current carrying metal parts
Contact gap 2 × 2 mm min.
Vibration resistance Malfunction 10 to 55 Hz, 0.75 mm single amplitude
Shock resistance Destruction 1,000 m/s2 min.
Malfunction 300 m/s2 min.
Conditional short-circuit current 100 A (EN60947-5-1)
Conventional free air thermal current (Ith) 2.5 A (EN60947-5-1)
Ambient operating temperature – 30 to 70°C (with no icing)
Ambient operating humidity 95% max.
Cable UL2464 No. 22 AWG, finishing O.D.: 8.3 mm
Weight Approx. 190 g (D4F-102-1R, with 1 m cable)
Approx. 220 g (D4F-120-1R, with 1 m cable)


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