ROTARY GEARED / WORM DRIVE OPERATED LIMIT SWITCHES

‘TSS’ Rotary Geared Limit Switches are used on Power and Control Circuits of Reversing Drives to Limit their running path or rotary movement like hoisting / lowering motion of EOT Cranes, within a pre-determined Operating Range. The Switch has Two Contacts, One contact cuts off power to the coil circuit of the Hoist or forward contactor and the other contact cuts off power supply to the down or reverse contactor. The contacts are automatically reset.

The Limit Switch Shaft can be directly coupled to the gear drive or chain driven according to individual requirement. The switch consists of a Heavy Duty worm gear drive unit built in cast housing with dust tight gasket sheet steel enclosure.

The switch enclosure is provide with an easily removable cover and the Limit switch is Powder coated.

Technical Specification:

Body Material

Cast Iron housing with dust tight gasket sheet steel enclosure / Aluminumdia cast.

Protection of Degree

IP 55

Gear Ratio

36:1 or 48:1 or 60:1 or 90:1

Rated

500 V AC

Current

Up to 40 Amps

Contact Material

Silver Cadmium

No. of Contacts

02 / 04

Switching Sequences

2 NC or 1 NO + 1 NC or 4 NC or 2 NO + 2 NC as required.

Cam Setting

Adjustable

Note: The speed of driving shaft rotation should not be more than 60rpm. The Switch is used particularly to Limit the Hoisting motion of EOT Cranes / Hoists.

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