Popular Safety Limit Switches Providing a Full Lineup Conforming to International Standards

• Lineup includes models with 1NC/1NO, 2NC, 2NC/1NO and 3NC contact forms. 
  (Slow-action models with MBB contacts are available.)

• M12-connector models are also available, saving on labor and simplifying replacement.

• Standardized gold-clad contacts provide high contact reliability. 
  Can be used with both standard loads and microloads.

• Conforms to the requirements for safety contacts in EN 115-1, EN 81-20, and EN 81-50 (slow-action models only).

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

Switches with Two Contacts (with Direct Opening Mechanism)

Switches with Three Contacts and MBB Contacts (with Direct Opening Mechanism)

General-purpose Switches with Two Contacts

Note: Mechanically speaking, these models are general-purpose switches with no direct opening mechanism.

General-purpose Switches with Three Contacts and MBB Contacts

Note: Mechanically speaking, these models are general-purpose switches with no direct opening mechanism.

Characteristics

Degree of protection *1		IP67 (EN60947-5-1)
Durability *2	Mechanical	15,000,000 operations min. *5
	Electrical	500,000 operations min. (3 A resistive load at 250 VAC) *3 300,000 operations min. (10 A resistive load at 250 VAC)
Operating speed		1 to 500 mm/s (D4N-1120)
Operating frequency		30 operations/minute max.
Contact resistance		25 mΩ max.
Minimum applicable load *4		1 mA resistive load at 5 VDC (N-level reference value)
Rated insulation voltage (Ui)		300 V
Rated frequency		50/60 Hz
Protection against electric shock		Class 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 resistance		100 MΩ min.
Contact gap		Snap-action: 2 × 0.5 mm min. Slow-action: 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)
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