3-20

Interlock Switches

Tongue Switches

MT-GD2

Description

The MT-GD2 is a robust tongue actuated safety interlock switch

designed to fit at the opening edge of sliding, hinged or lift-off guards.

With its dual entry slots and rotatable head, the MT-GD2 can offer

eight different options for actuator entry.

The MT-GD2 features a compact housing of only 117mm x 40mm x

43mm with DIN 50041 standard fixing centres and includes forced

guided contacts and a tamper-resistant mechanism.

The MT-GD2 is available with a variety of contact configurations

enabling it to be used as part of a system for higher-risk applications.

The unit is sealed to IP67 and has 1 conduit entry. Operation of the

switch is achieved by the insertion of the specially profiled stainless

steel actuator which should be permanently fixed to the leading edge

of the guard door. An optional flexible actuator allows the MT-GD2

to operate on smaller radii doors (

≥60mm) and a flat actuator gives

additional mounting options.

A style incorporating a latch release mechanism allows manual

retention of the actuator in the switch until the release mechanism is

manually activated.

Features

• Strong and versatile, can be used in most applications

• Eight possible actuator entry points, easy to install

• Variety of contact configurations

• Optional latch release styles

• Industry standard fixing centres to DIN/EN50041

• Conforms to EN1088, EN292, EN60947-5-1, EN60204-1,

EN50041

Specifications

Note: The safety contacts of the Guardmaster switches are described as normally

closed (N.C.) i.e., with the guard closed, actuator in place (where relevant) and the

machine able to be started.

MT-GD2 Latch Release Style

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 TUV Nord

Safety Contacts

2 N.C., 3 N.C., 4 N.C. direct opening

action

Utilization Rating

AC 15

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

Min Current

5V, 5mA DC

Rtd. Insulation Voltage

(Ui) 500V

Rtd. Impulse Withstand Volt.

(Uimp) 2500V

Auxiliary Contacts

1 N.O. or 2 N.O.

Actuator Travel for Positive

Opening

6mm (0.24in)

Break Contact Min Force

12N (2.7lb)

Max Actuation Speed

1m/s

Max Actuation Frequency

2 cycle per sec

Case Material

Painted zinc

Actuator Material

Stainless Steel

Protection

IP67

Conduit Entry

1/2in NPT or M20 or Quick Disconnect

Operating Temperature

-20°C to +80°C (-4°F to +176°F)

Fixing

4 x M5

Mounting

Any position

Mechanical Life

1,000,000 operations

Weight

520g (1.15lbs)

Colour

Red

Torque Settings

Fixing Bolts

Lid Screws

Terminal Screws

1.6Nm

16.Nm

1.0Nm