ESPE – SLM11 Series

SLM11 Safety Door Switch(4 contacts)

Brand : ESPE

The ESPE SLM11 Series safety door switch is an industrial safety interlock designed to monitor guard doors, access panels, hinged doors, and safety fences on automated machinery. Available in models with 2 contacts or 4 contacts, it offers high holding force up to 1300 N, IP67 dust‑proof and water‑resistant protection, and robust construction for reliable operation in harsh industrial environments. These switches support both general load and micro‑load applications, feature rotatable actuator head and multiple key orientations for flexible installation, and are compliant with international safety standards for door monitoring to ensure safe machine access control.

Both the 2‑contact and 4‑contact variants carry CE and TÜV certification and meet standards such as EN 60947‑5‑1, EN ISO 14119, and IEC/GB safety norms, making them suitable for a wide range of industrial guarding and safety monitoring tasks where reliable door position feedback is required. The switch housings are made of PA66 fire‑retardant material and include green LED indicators to show operating status.

For more info, download our full technical spec.

Specifications

Parameter of safety door switch
Electromagnetic tube
Rated Voltage DC 24V
Capacity Approximate 4.8W*1
Rated current Approximate 200mA*2
Insulation Class B (130­°C)
LED indicator
Rated voltage DC 24V
Rated current Approximate 1mA
Luminous color (LED) Green
Safety level PL d (ISO 13849-1)
Certificate TÜV
Standard EN60947-5-1、GB/T 14048.5、EN ISO 14119、GB/T 18831
Protection rate IP67
Material PA66 fire retardant
Mechanical lifespan Over 1,000,000 times
Electrical lifespan Over 150, 000 times (AC240V 3A, resistive load)
Using Type AC-15 DC-13
Rated operating voltage(Ue) 240V 24V
Rated operating current(Ie) 3A 2A
Electrical parameter
Contact resistance <200mΩ
Nominal discharge current (lth) 10A
Rated insulation voltage (Ui) 300V
Anti-electric shock level Class II (double insulation)
Pulse withstand voltage (EN60947-5-1) 2.5KV
Insulation resistance >100mΩ
Short-circuit protection 10A, 250V requires a quick-break fuse
Vibration resistance 10-55Hz, double amplitude 1.5mm
Impact resistance Durability 1000m/s2
Conditional short-circuit current 100A (EN60947-5-1)
Space of contact 2*2mm above
Action characteristic
Direct opening force Minimum 60N
Direct opening travel over 10mm
Allowed operating speed 0.1-0.5m/s
Allowed operating frequency Maximum 30 times/minute
Holding force 1300N
Environment
Operating environment 3 (EN 60947-5-1)
Operating temperature -10 ~55°C ( no freezing)
Operating humidity <95% RH

Note:

1. The maximum Inrush power of the safety door lock does not exceed 15W, and the power consumption will recover to within 4.8W afterwards.

2. The maximum Inrush current of the safety door lock shall not exceed 600mA, and the current consumption will recover to less than 200mA afterwards.

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