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All Categories > Safety Interlock Switches > Guard Door Locking Safety Interlock Switches > D4NL Guard Lock Safety-door Switch > D4NL Guard Lock Safety-door Switch > Item # D4NL-1GFG-B  
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Item # D4NL-1GFG-B, D4NL Guard Lock Safety-door Switch

D4NL Guard Lock Safety-door Switch

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Lead-free, Environment-friendly Design
  • Contains no harmful substances, such as lead, cadmium or hexavalent chromium, reducing the burden on the environment.
  • Models with 4-contact and 5-contact built-in Switches are available.
  • Key holding force of 1,300 N minimum.
  • Can be used for either standard loads or microloads.
  • Lineup includes models with a conduit size of M20.
  • IP67 degree of protection.


Shipping requirements1

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Head material


Release Key Position


Release Key Type

Standard release key


Solenoid: 24 VDC Orange LED: 10 to 115 VAC/VDC

Lock and Release Types

24-VDC Solenoid Lock/Mechanical Release

Built-in Switch

3NC slow-action contacts plus 1NC/1NO slow-action contacts

Mounting direction

Four mounting directions possible (Front-side mounting at time of delivery)/plastic

Degree of Protection

IP67 (EN 60947-5-1) (This applies for the Switch only. The degree of protection for the key hole is IP00.)

Durability Mechanical

1,000,000 operations min.

Durability Electrical

500,000 operations min. for a resistive load of 3 A at 250 VAC

Operating Speed

0.05 to 0.5 m/s

Operating Frequency

30 operations/min

Rated Frequency

50/60 Hz

Contact Gap

2 x 2 mm

Operating Characteristics - Direct Opening Force Min.

60 N

Operating Characteristics - Direct Opening Travel Min.

10 mm

Holding Force - Min.

1,300 N

Insulation Resistance

100 MΩ min. (at 500 VDC)

Minimum Applicable Load

Resistive load of 1 mA at 5 VDC (N-level reference value)

Rated Insulation Voltage

300 V

Rated open thermal current (Ith)


Impulse Withstand Voltage

Between other terminals and uncharged metallic parts: 6 kV
Between terminals of different polarities: 4 kV
Between terminals of the same polarity: 2.5 kV

Conditional Short-Circuit Current

100 A

Pollution Degree


Protection Against Electric Shock

Class II (double insulation)

Contact Resistance

25 mΩ max. per contact (initial value)

Vibration Resistance Malfunction

10 to 55 Hz, 0.75-mm single amplitude

Shock Resistance Destruction

1000 m²/s

Shock Resistance Malfunction

100 m²/s

Operating Temperature

-10 to 55 ºC


95% max.

Weight Approx.

370 g
1 Note: The RDP products are a subset of products available. To view a full list of products, please select all three options - Normally in Stock US, Normally in Stock Canada and Request Availability.


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