Small solenoid switch offers high locking force

All the key designer benefits of small size, high holding force and robust metal construction are provided by a solenoid-locking switch that has a substantial 1600N of holding force.

All the key designer benefits of small size, high holding force and robust metal construction are provided by Guardmaster's new 440G-MT, solenoid-locking switch.

The 440G-MT is a new generation safety device that enables designers to respond positively to the pressures of downsizing with modern machinery.

At the same time it provides improved safety provision with a substantial 1600N of holding force to ensure that guard doors stay firmly shut until machine power is isolated.

The slim design of the 440G-MT (to DIN 500491), together with its flexibility for eight actuator entry positions, enables the new safety interlock to be mounted on most designs of guards, even in tight spaces.

Moreover, the combination of the 440G-MT's robust metal body and its flexible actuator - which allows the effect of guard wear, mean that it is the ideal device for use in a widest range of operating environments, including arduous ones where lower temperatures (down to -250degC) and external atmospheric conditions are encountered.

With its extremely high holding force, the GM 440G-MT provides a solution across a greater range of applications where higher actuator holding forces are required.

For the designer and OEM this means a reduction in inventory as only a single type of switch, rather than a range of switches need be stocked.

Also aiding stock reduction, the in-line symmetrical head design of the 440G-MT means that the safety interlock can be used on both left and right handed guard door applications.

In contrast, competitive units without this feature may require several discrete handed versions to be stocked.

The 440G-MT is available in four basic versions providing the OEM with the maximum choice of operating configurations, including power to release or lock, optional arm key release and LED indication, if required.

Standard across all these versions is the facility for operation in high risk applications, the 440G-MT being designed with 4 sets of contacts, which can be configured in a number of ways: 4NC, 3NC 1NO or 2NC 2NO.

These contact options provide great flexibility to the OEM as, once again, they can reduce the number and type of safety switches required on a machine.

In addition, they are also part of an electrical installation package that makes the 440G-MT easy to install.

The second element in the package is three conduit entry options, which allow cable entry on either side of the safety interlock, or at the end of the unit.

All versions of the 440G-MT conform to standards EN 1088, EN 60947-5-1, and IEC 60204 -1, with both TUV and UL approvals pending.

The interlocks are suitable for operation on 24V (AC and DC), 110V AC and 230V AC supplies and are rated for operation in the temperature range -250degC to +800degC Guardmaster is a world leader in the design and manufacture of machinery interlocking and safety monitoring systems.

As a member of EJA, which is part of Rockwell Automation, Guardmaster is able to offer complete and integrated safety and control systems, including guards, safety mats and machine interlocks, all of which find application in a wide range of industries worldwide.

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