Motor operator for air disconnect switches

The Joslyn Motor Operator (JMO) is a long life, maintenance-free operator for use with the air disconnect switches. The JMO ensures reliable switch operation under the most adverse conditions.

The JMO is available with 10,000 or 20,000 inch pound torque output developed at minimum operating voltages. The JMO can be supplied for remote or manual operation. Dynamic braking eliminates the need for mechanical braking.

The output of a ½ horsepower series wound motor is converted by a worm gear housed in a rugged aluminum casting. The enclosure provides space and access for easy installation wiring. Gears are coated with a solid lubricant providing for corrosion resistant long life and low temperature operation. A decoupler system is used to disconnect the vertical operating pipe and has provisions for padlocking in the open or closed position while in the disengaged position.



	Long Maintenance-Free Life
	Rugged aluminum casting withstands the most adverse conditions.
	Reliable Switch Operation
	20,000 or 10,000 inch pound torque output developed at minimum operating voltages.
	Manual Switch Operation
	Hand crank prevents normal electrical operation as handle is engaged.
	Output Decoupler
	Provisions for padlocking in the open or closed position while disengaged.
	Auxiliary Contacts
	Contacts (5) are wired to a terminal strip and are adjustable through 360°.

Standard Ratings
Control Voltages	Motor Rated Current (Amperes)	Approximate Locked Rotor Current At Rated Control Voltage (Amperes)
48 VDC	17	58
125 VDC	6.8	25
250 VDC	2.4	15
120 VAC	6.4	24
230 VAC	2.0	14

Torque and Speed Ratings (at Minimum Operating Voltage)

10,000 IN-LB - 3-4 seconds @ 180° Rotation

20,000 IN-LB - 6-8 seconds @ 180° Rotation

Rated Torque provided at minimum operating voltage

Maximum shaft rotation 270°

1/2 HP series wound with split field winding and dynamic braking


Options and Accessories:
	Counter
	Indicating Lights
	Additional auxiliary contacts for customer use in multiples of 3
	Alternative auxiliary contacts for customer use rated 5A @ 125 VDC

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