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Lead Contents

Safety Limit Switch

D4N

D4N

Upgraded Safety Limit Switches Based on the Popular D4D, Providing a Full Lineup Conforming to International Standards

Primary Contents



Ratings and Specifications

Degree of protection *1IP67 (EN60947-5-1)
Durability *2Mechanical15,000,000 operations min. *5
Electrical500,000 operations min. (3 A resistive load at 250 VAC) *3
300,000 operations min. (10 A resistive load at 250 VAC)
Operating speed1 to 500 mm/s (D4N-1120)
Operating frequency30 operations/minute max.
Contact resistance25 mΩ max.
Minimum applicable load *41 mA resistive load at 5 VDC (N-level reference value)
Rated insulation voltage (Ui)300 V
Rated frequency50/60 Hz
Protection against electric shockClass II (double insulation)
Pollution degree (operating environment)3 (EN60947-5-1)
Impulse withstand
voltage
(EN60947-5-1)
Between terminals of
same polarity
2.5 kV
Between terminals of
different polarity
4 kV
Between each terminal
and non-current carrying
metallic parts
6 kV
Insulation resistance100 MΩ min.
Contact gapSnap-action: 2 × 0.5 mm min.
Slow-action: 2 × 2 mm min.
Vibration resistanceMalfunction10 to 55 Hz, 0.75 mm single amplitude
Shock resistanceDestruction1,000 m/s2 min.
Malfunction300 m/s2 min.
Conditional short-circuit current100 A (EN60947-5-1)
Conventional free air thermal current (Ith)10 A (EN60947-5-1)
Ambient operating temperature-30 to 70°C (with no icing)
Ambient operating humidity95% max.
WeightApprox. 82 g (D4N-1120)
Approx. 99 g (D4N-5120)

Note:
1. The above values are initial values.
2. Once a contact has been used to switch a standard load, it cannot be used for a load of a smaller capacity.
Doing so may result in roughening of the contact surface and contact reliability may be lost.
*1.The degree of protection is tested using the method specified by the standard (EN60947-5-1). Confirm that sealing properties are sufficient for the operating conditions and environment beforehand. Although the switch box is protected from dust or water penetration, do not use the D4N in places where foreign material such as dust, dirt, oil, water, or chemicals may penetrate through the head. Otherwise, accelerated wear, Switch damage or malfunctioning may occur.
*2.The durability is for an ambient temperature of 5 to 35°C and an ambient humidity of 40% to 70%. For more details, consult your OMRON representative.
*3.Do not pass the 3 A, 250 VAC load through more than 2 circuits.
*4.This value will vary with the switching frequency, environment, and reliability level. Confirm that correct operation is possible with the actual load beforehand.
*5.The mechanical durability of fork lever lock models is 10,000,000 operations min.

Caution: In the interenst of product improvement, specifications are subject to change without notice.