Safety Interlock Switches

Mechanical Indicator with IP67 degree of protection 

Ideal for use on large doors and large equipment requiring strong locking force. 

Features & Benefits

• Locking force of more than 5000N (40mm-wide slim model)
• Greatly downsized from IDEC’s HS1L interlock switches.
• Head rotating structure. Can be roated without removing the head.
• Prevents invalid operation. (On usual interlock switches, the NC contact closes when the head is removed)
• Energy efficient 200mA solenoid consumption
• Mechanical durability improved to 2,000,000 operations
• Spring clamp terminals wit side- conduit model 
• Lock status can be identified from the front  Rear unlock mechanical indicator (First in the industry)

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HS1T Interlock Switches with Solenoid Brochure 

Machines stops when the door is opened

Direct opening mechanism with 2 actuator entry slots. 

Features & Benefits

• When mounting the actuator on a movable door and the interlock switch on a machine, opening or closing status of the door can be detected.
• Contact parts degree of protection: IP67 (IEC 60529)
• NC contacts feature direct opening mechanism (IEC/EN 60947-5-1).
• Special actuator prevents defeating (ISO 14119, EN 1088)
• Detects entry to hazardous area when mounted on safety guards.
• Two actuator entry slots and three conduit ports are provided.
• HS1B: Rugged die-cast aluminium housing 
• HS2B: Compact and lightweight plastic housing

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HS1B/2B Interlock Switches Brochure 

IP67 rated rugged die-cast aluminium housing

The guard door remains locked until the machine stops completely. 

Features & Benefits

• With the actuator mounted on the guard door and the interlock switch on the machine, the door is mechanically locked when closed.
• The door is unlocked by a solenoid lock-release signal from a PLC or another source after the machine has stopped, ensuring higher safety.
• In the event of power failure or for machine maintenance, the door can be unlocked using a special tool.
• Flexible installation: The actuator can be inserted into two directions.
• Select from four different circuit configurations.

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HS1C Interlock Switches with Solenoid Brochure 

Operator’s safety inside the hazardous area is ensured with the portable key 

Hostage control for large system or machine applications is achieved. 

Features & Benefits

• The door and key are locked during machine operation.
• The door is unlocked by removing the key, and the interruption of load circuit and control circuit are maintained.
• Ideal as a portable key for bringing into the hazardous area.
• 30 different numbers are available for key, so that neighboring switches cannot be operated by the same key.
• Flexible installation: The actuator can be inserted into two directions.
• IP67 rated rugged die-cast aluminum housing.

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HS1C-K Interlock Switches with Solenoid and Hostage Key Brochure 

3000N locking strength 

Suitable for large and heavy doors. 

Features & Benefits

• Same actuator as HS1E (actuator retention force 3000N)
• Six contacts in a compact housing (same size as HS1E)
• Same dimensions and mounting hole layouts as HS1E (Size: 35 × 104 × 129 mm)
• Door open, closed, and locked statuses can be monitored for various applications.
• Energy efficient new solenoid unit. 32% less solenoid current consumption compared with HS1E.
• Manual unlock key and LED indicator are standard.
• Manual unlock key allows for manual unlocking in the event of power failure or maintenance.
• Indicator has an independent circuit, and can be used for various purposes.
• Two locking mechanisms to choose from—spring lock (unlocked with energized solenoid) or solenoid lock (locked with energized solenoid).
• M3 terminal screws for wiring.
• Wide operating temperature range (–20 to +55°C).

Small safety switch with four poles and solenoid 

Ideal for applications in tight spaces. 

Features & Benefits

• Compact body. 35 × 40 × 146mm.
• Rear unlocking button for emergency escape available. Also available is the rear unlocking button kit.
• A variety of circuits—dual safety circuit and four-circuit independent outputs available.
• Gold-plated contacts.
• Spring lock and solenoid lock are available.
• The head orientation can be rotated, allowing 8 different actuator entries.
• A metal entry slot ensures high durability.
• An actuator with rubber bushings alleviates the impact of actuator entry into the slot.
• The actuator retention force is 1400N minimum (GS-ET-19).
• Integral cable design minimizes wiring, preventing wiring mistakes.
• LED indicator indicates the solenoid status.
• Double insulation structure.
• Automatically locks the actuator without power applied to the solenoid.
• After the machine stops, unlocking is completed by the solenoid, providing high safety features.
• Manual unlocking is possible in the event of power failure or maintenance.
• The actuator is locked when energized.
• The actuator is unlocked when de-energized.
• Flexible locking function can be achieved for an application where locking is not required and sudden stopping of machine must be prevented.

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HS5E Interlock Switches with Solenoid Brochure 

Head removal detection with IP65 degree of protection 

New interlock switches that can be locked and unlocked with a key. 

Features & Benefits

• Head removal detection circuitry.
• High-security pin tumbler key is used. Sixteen types of key numbers are available.
• Available with rear unlocking button for emergency escape.
• Accessory available for aluminum frame mounting.
• Gold-plated contacts.
• The locking strength is 1400N minimum. (GS-ET-19)
• The head orientation can be rotated, allowing 8 different actuator entries.
• Metal actuator entry slot ensures high durability.
• Actuator with rubber bushings alleviates the impact of the actuator entry slot.
• Environmentally-friendly. RoHs directive compliant.
• Double insulation structure. No need for grounding.
• Compact body: 35 × 40 × 146mm

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HS5E-K Interlock Switches with Key Brochure 

2 Contact with 8 actuator entry slots 

Two-contact solenoid interlock switches ideal for use on applications such as food machines and injection molding machines.

Features & Benefits

• Compact body: 35 × 40 × 127mm
• The locking strength is 1400N minimum.
• Spring clamp terminal block prevents loosening of wires due to vibration.
• Gold-plated contacts suitable for small loads.
• Spring lock models (unlocks when the solenoid is energized) and solenoid lock models (locks when solenoid is energized) are available.
• The head orientation can be rotated, allowing 8 different actuator entries.
• Actuators can be used with other HS5 series interlock switches. Spring loaded actuator exclusive for HS5L available.
• LED indicator shows solenoid operation.
• Automatically locks the actuator without power applied to the solenoid.
• After the machine stops, unlocking is completed by the solenoid, providing high safety features.
• Manual unlocking is possible in the event of power failure or maintenance using a manual unlocking key.
• Head removal detection circuitry (spring lock models only).
• The actuator is locked when energized.
• The actuator is unlocked when de-energized.
• Flexible locking function can be achieved, for an application where locking is not required and sudden stopping of a machine must be prevented.

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HS5L Interlock Switches with Solenoid (2 Contact) Brochure 

4 Contact with rear unlocking button  

Four contact solenoid interlock switches ideal for use on limited mounting spaces such as small doors.

Features & Benefits

• Compact body: 35 × 40 × 127mm
• The locking strength is 1400N minimum.
• Spring clamp terminal block prevents loosening of wires due to vibration.
• Gold-plated contacts suitable for small loads.
• Spring lock models (unlocks when the solenoid is energized) and solenoid lock models (locks when solenoid is energized) are available.
• The head orientation can be rotated, allowing 8 different actuator entries.
• Actuators can be used with other HS5 series interlock switches. Spring loaded actuator exclusive for HS5L available.
• LED indicator shows solenoid operation.
• Automatically locks the actuator without power applied to the solenoid.
• After the machine stops, unlocking is completed by the solenoid, providing high safety features.
• Manual unlocking is possible in the event of power failure or maintenance using a manual unlocking key.
• HeadThe actuator is locked when energized.
• The actuator is unlocked when de-energized.
• Flexible locking function can be achieved, for an application where locking is not required and sudden stopping of a machine must be prevented. removal detection circuitry (spring lock models only).

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HS5L Interlock Switches with Solenoid (4 Contact) Brochure 

IP67 Degree of Protection  

World class compactness with three poles of contacts. 

Features & Benefits

• Compact body: 35 × 40 × 127mm
• The locking strength is 1400N minimum.
• Spring clamp terminal block prevents loosening of wires due to vibration.
• Gold-plated contacts suitable for small loads.
• Spring lock models (unlocks when the solenoid is energized) and solenoid lock models (locks when solenoid is energized) are available.
• The head orientation can be rotated, allowing 8 different actuator entries.
• Actuators can be used with other HS5 series interlock switches. Spring loaded actuator exclusive for HS5L available.
• LED indicator shows solenoid operation.
• Automatically locks the actuator without power applied to the solenoid.
• After the machine stops, unlocking is completed by the solenoid, providing high safety features.
• Manual unlocking is possible in the event of power failure or maintenance using a manual unlocking key.
• HeadThe actuator is locked when energized.
• The actuator is unlocked when de-energized.
• Flexible locking function can be achieved, for an application where locking is not required and sudden stopping of a machine must be prevented. removal detection circuitry (spring lock models only).

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HS6B Interlock Switches Brochure 

HS6E Subminiture Interlock Switches with Solenoid  

Ideal for applications in tight spaces. 

Features & Benefits

• Compact body: 75 × 15 × 75mm
• 15-mm-wide, thinnest solenoid interlock switch in the world.
• Reversible mounting and angled cable allow four actuator insertion directions.
• Energy saving. 24V DC, 110mA (solenoid: 100 mA, LED: 10 mA). Can be driven directly by a controller.
• Manual unlocking possible on three sides.
• LED indicator shows solenoid operation
• Automatically locks the actuator without power applied to the solenoid.
• After the machine stops, unlocking is completed by the solenoid.
• Manual unlocking is possible on three sides in the event of power failure or maintenance.
• The actuator is locked when energized.
• The actuator is unlocked when de-energized.
• Flexible locking function can be achieved, for an application where locking is not required and sudden stopping of a machine must be prevented.

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HS6E Interlock Switches with Solenoid Brochure