Interlock Switches
Tongue Switches
Elf
Specifications
Standards
EN954-1, ISO13849-1, IEC/EN60204-1,
NFPA79, EN1088, ISO14119, IEC/
EN60947-5-1, ANSI B11.19, AS4024.1
Cat. 1 Device per EN954-1
Dual channel interlocks suitable for
Cat. 3 or 4 systems
CE marked for all applicable directives,
cULus and BG
1 N.C. or 2 N.C. direct opening action
600V
1.2A
600V
0.4A
10A
5V 5mA DC
>2mm (0.078in)
(Uimp) 2500V
1 N.O.
3
3.6mm (0.141in)
150mm (5.90in)
60mm (2.36in) with GD2 kit
6N (1.35lb)
160mm (6.29in) per sec
2 Cycle per sec
UL approved glass filled polyester
Stainless Steel
IP67
1 x M16 or quick-disconnect style
-20°C to +80°C (-4°F to +176°F)
2 x M4
Any position
1,000,000 operations
1,000,000 operations
60g (2.11oz)
Red
500V 240V 120V
1.4A 3A 6A
500V 250V 125V
0.55A 1.1A 2.2A
Category
Approvals
Safety Contacts
Designation/Utilization Cat.
A600/AC-15 (Ue)
(Ie)
N600/DC-13 (Ue)
(Ie)
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.
Thermal Current (lth)
Minimum Current
Safety Contact Gap
Rtd. Impulse withstand Volt.
Auxiliary Contacts
Pollution Degree
➊
Actuator Travel for Positive
Opening
Min Operating Radius
Break Contact Min Force
Max Actuation Speed
Max Actuation Frequency
Case Material
Actuator Material
Protection
Conduit Entry
Operating Temperature
Fixing
Mounting
Mechanical Life
Electrical Life
Weight
Colour
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
➊
Conductive pollution occurs, or dry, non conductive pollution occurs which
becomes conductive due to condensation.
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.
3-2
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