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Auxilliary Switch, 1 SPDT, Rainproof

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Manufacturer: Johnson Controls

Category: Electrical Controls

S91DJ and S91EJ Types Auxiliary Switch Kits For Series M100 Motor Actuators

The S91DJ and S91EJ auxiliary switch kits mount on the auxiliary end of the Series M100 motor actuators to provide switching functions. The switches are for use in heating, refrigeration, air conditioning, and industrial applications.

Typical applications include:
· Capacity control on multistage refrigeration machines.
· Multi-speed fan controls.
· Staging of multiple nozzles on boilers.
· Operation of pilot lights.

All Series S91 controls are designed for use only as operating controls. An operating control is not authorized for use where its failure in any mode can result in personal injury and/or loss of property. It is the responsibility of the user to add those necessary devices that protect against undesirable system failure modes.

· Compact, heavy duty switch kit enclosures of drawn steel.
· Long wearing cam followers give consistent switch operation. Each switch is numbered and the wire leads are color coded.
· The SPDT switches are not position sensitive.
· Switch kits are easily field mounted to Johnson Controls Series M100 motor actuators.

General Description
The switch kits have one or two single pole, double throw snapacting switches. The switches are actuated by cams which are positioned by the motor actuator’s output shaft to open or close the switch contacts at the desired motor actuator position.

Fig. 1 -- S91 Switch Kit mounted on a Series M100 Non-Spring Return Motor Actuator.
Fig. 2 -- S91 Switch Kit mounted on a Series M100 Spring Return Motor Actuator.

Switch and Terminal Identification
Each switch on the S91EJ is identified and the wire leads are color coded. The switches are marked “1” and “2”. The No. 1 switch is located at the back of the switch kit. The switch in the S91DJ, and the No. 1 switch in the S91EJ, have leads of solid colors. The No. 2 switch in the S91EJ has black leads with color stripes. The red (red striped) wire leads is common. The circuit between the red (red striped) and yellow (yellow striped) wire leads closes on the high rise of the cam. The circuit between the red (red striped) and blue (blue striped) wire leads closes on the low rise of the cam (zero position).

Replaces Part Numbers: S91DJ-2, CARS91DJ-2

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