CE Approved

    Red ABS, Resin Encapsulated
    2NO + 1NC (with door open)
Contact Rating:
    400mA 24VDC
    Magnetically Coded
    Bi-Colour LED (Open/Close Indication)
Ingress Protection Rating:
    IP67 and IP69K  

The HE safety switches have up to 2 x N/O + 1 N/C bidirectional solid state outputs along with a built in LED(s) for indication. When installed on a machine guard, power is applied, and the switch and actuator are within the specified operating range, the N/O Outputs will be closed, the N/C Output will be open.

The HE safety switches are fully encapsulated into an ABS housing and are available with 5, 10 or 15 metre pre-wired cable. With a 7mm switching distance the actuator can approach the switch from most angles. When the switch is closed the targets on the printed face of the switch must be aligned.

Product Code Description Part No. Quote options Added to Basket
344.006 HE4 / Plastic / 2NO + 1NC / 24VDC / 03-Metre Pre-Wired (Switch and Actuator) HE4-21-DC-03M
Qty: - +
344.007 HE4 / Plastic / 2NO + 1NC / 24VDC / 06-Metre Pre-Wired (Switch and Actuator) HE4-21-DC-06M
Qty: - +
344.008 HE4 / Plastic / 2NO + 1NC / 24VDC / 10-Metre Pre-Wired (Switch and Actuator) HE4-21-DC-10M
Qty: - +
344.097 HE4-ACT (Actuator Only) HE4-ACT
Qty: - +

Dimensions (mm)

Dimensions in millimetres

connection drawing 1

connection drawing 2

Technical Specifications
Supply Voltage Options 24VDC (+/- 15%)
Power Consumption na
Safety Output Up to 2 x NO
Safety Output Rating 24Vdc / 400mA
Auxilliary Output Up to 1 x NC
Auxilliary Output Rating 24Vdc / 400mA
Cable / Connector Pre-wired
Cable Length 3, 6 or 10 metre
Coding Solid State, Coded Magnetic
Input na
Reset Options na
Indication Dual colour LED Red/Green
Dimensions of Control Unit (mm) na
Dimensions of Switch (mm) 30.3 x 76.3 x 16mm
Dimensions of Actuator (mm) 30.3 x 76.3 x 16mm
Weight na
IP Rating IP67 / IP69K
Construction 316 Grade Stainless Steel
Mounting 4 x M4 Security Screws
Environmental Specifications
Operating Temperature -25°C to +55°C
Storage Temperature -25°C to +55°C
Safety Related Data
PL in accordance with EN ISO 13849-1 PL-e, CAT 4
SIL CL in accordance with EN IEC 62061 SIL 3
PFHd in accordance with EN IEC 62061 3.62 x 10 -9
PFH 4.43 x 10 -9
B10d 2 x 10 -6
MTTFd High > 100 Years ( Based on usage rate of 360 Days
TM 20 years
DC 96.50%
SFF 98.20%
File Title File Name Download File
340 400 Iss 11 Mechan HE Series installation guide 340-400-Iss-11-Mechan-HE-Series-installation-guide.pdf PDF (3.7 MB)