3-2

Interlock Switches

Tongue Switches

Elf

Description

The Elf is a tongue (or key) operated safety interlock switch

designed to fit at the leading edge of sliding, hinged or liftoff guards.

The Elf ’s unique miniature housing (only 75

× 25 × 29mm) makes it

the smallest interlock currently available. It is designed for smaller

machines such as printers, copiers or domestic machinery which,

until now, have been unable to use safety interlocks due to space

restrictions.With its dual entry slots and rotatable head, the versatile

Elf can offer up to eight different actuator entry options.

Operation of the switch is achieved through the insertion of a

specially profiled stainless steel key that is permanently mounted to

the guard door. The semi-flexible key allows the Elf to be used on

small radii doors (60mm or 2.36in).

The Elf is available with 2 N.C. or 1 N.O. and 1 N.C. safety contact

and conduit entry (1

× M16 or connector style) sealed to IP67

(watertight and dustproof). A blanking plug is supplied for the

unused key entry.

Features

• Ideal for small, light weight guards

• The smallest interlock switch available

• Contacts, 2 N.C. or 1 N.O. & 1 N.C.

• Eight possible actuator entry points, easy to install

• Environmental protection: IP67

Applications

Note: Lift-off guards require good alignment when using

tongue actuated interlock switches.

IMPORTANT: It must not be possible to lift the guard

without actuating the interlock. An interlock on either

side may be required.

Specifications

➊ Conductive pollution occurs, or dry, non conductive pollution occurs which

becomes conductive due to condensation.

Standards

EN954-1, ISO13849-1, IEC/EN60204-1,

NFPA79, EN1088, ISO14119, IEC/

EN60947-5-1, ANSI B11.19, AS4024.1

Category

Cat. 1 Device per EN954-1

Dual channel interlocks suitable for

Cat. 3 or 4 systems

Approvals

CE marked for all applicable directives,

cULus and BG

Safety Contacts

1 N.C. or 2 N.C. direct opening action

Designation/Utilization Cat.

A600/AC-15 (Ue)

(Ie)

N600/DC-13 (Ue)

(Ie)

600V 500V 240V 120V

1.2A 1.4A 3A 6A

600V 500V 250V 125V

0.4A 0.55A 1.1A 2.2A

Thermal Current (lth)

10A

Minimum Current

5V 5mA DC

Safety Contact Gap

>2mm (0.078in)

Rtd. Impulse withstand Volt.

(Uimp) 2500V

Auxiliary Contacts

1 N.O.

Pollution Degree ➊

3

Actuator Travel for Positive

Opening

3.6mm (0.141in)

Min Operating Radius

150mm (5.90in)

60mm (2.36in) with GD2 kit

Break Contact Min Force

6N (1.35lb)

Max Actuation Speed

160mm (6.29in) per sec

Max Actuation Frequency

2 Cycle per sec

Case Material

UL approved glass filled polyester

Actuator Material

Stainless Steel

Protection

IP67

Conduit Entry

1 x M16 or quick-disconnect style

Operating Temperature

-20°C to +80°C (-4°F to +176°F)

Fixing

2 x M4

Mounting

Any position

Mechanical Life

1,000,000 operations

Electrical Life

1,000,000 operations

Weight

60g (2.11oz)

Colour

Red