Robust safety limit switch with metal housing Slow-action and snap-action contact with certified direct opening operation certification

 

• Direct opening mechanism (NC contacts only) added to enable opening contacts when faults occur, such as fused contacts.
• Safety of lever settings ensured using a mechanism that engages a gear between the operating position indicator plate and the lever.
• Equipped with a mechanism that indicates the applicable operating zone, as well as push-button switching to control left and right motion.
• Head seal structure strengthened to improve seal properties (TÜV: IEC IP67, UL: NEMA 3, 4, 4X, 6P, and 13).
• Wide standard operating temperature range: –40 to 80°C (standard type)
• Certified standards: UL, CSA, EN (TÜV), and CCC.

 

Ratings / Characteristics

Characteristics

Degree of protection *1		IP67 (EN60947-5-1)
Durability *2	Mechanical	30,000,000 operations min. (snap-action)  10,000,000 operations min. (slow-action)
	Electrical	500,000 operations min. (10 A resistive load at 250 VAC)
Operating speed		1 mm/s to 0.5 m/s
Operating frequency	Mechanical	120 operations/min.
	Electrical	30 operations/min.
Contact resistance		25 mΩ max.
Minimum applicable load *3		180 mA resistive load at 5 VAC  (N-level reference value)
Rated insulation voltage (Ui)		600 V (EN60947-5-1)
Rated frequency		50/60 Hz
Protection against electric shock		Class I (with ground terminal)
Pollution degree (operating environment)		3 (EN60947-5-1)
Impulse withstand voltage  (EN60947-5-1)	Between terminals of same polarity	2.5 kV (snap-action)/4 kV (slow-action)
	Between terminals  of different polarity	4 kV (slow-action)
	Between each  terminal and ground	4 kV
Insulation resistance		100 MΩ min. (at 500 VDC) between terminals of the same polarity  and between each terminal and non-current-carrying part
Contact gap		2 × 2 mm min. (slow-action)  2 × 0.5 mm min. (snap-action)
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 enclosed thermal current (Ithe)		20 A (EN60947-5-1)
Ambient operating temperature		-40 to 80°C (with no icing)
Ambient operating humidity		95% max.
Weight		Approx. 250 g

Note: 1. The above values are initial values.
2. The above values may vary depending on the model. Consult your OMRON sales representative for details.
*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.
*2. The durability is for an ambient temperature of 5 to 35°C and ambient humidity of 40% to 70%. For further conditions, consult your OMRON sales representative.
*3. The above values may vary depending on switching frequency, environmental condition, and relativity level, consult your OMRON sales representative.

Downloads

Document	File Type	File Size	Download
D4B-[]N Series Datasheet	PDF	2.3 MB

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Created By: G.Dezines