Series DSS Direct-Contact Speed Switch

Specifications

Ambient Temperature Range:

14°F to 131°F (-10°C to +55°C).

Max. Operating Temperature:

DSS-E: Class T6: 185°F (85°C).

Enclosure:

Aluminum with screw cover.

Enclosure Rating:

DSS-W: NEMA 3S, 4 and 4X. DSS-E: NEMA 3S, 4 and 4X, NEMA 7: Class I groups C and D, NEMA 9: Class II groups F and G, class III.

Switch Type:

DPDT.

Electrical Rating:

3A @ 120/240 VAC, 1/10 Hp @120/240 VAC.

Electrical Connections:

Screw terminal.

Conduit Connections:

(2) 3/4" female NPT.

Mounting Orientation:

Any.

Set Point Adjustment:

Adjustment screw.

Power Requirements:

105-135 VAC, 50/60 Hz, 210-250 VAC, 50/60 Hz; or 24 VAC/DC depending on model.

Power Consumption:

3 Watts.

Repeatability:

2% maximum at constant voltage and temperature.

Pick-up Point:

3 speed ranges at which relay will energize: LOW: 0.1 to 10 RPM; MEDIUM: 1 to 100 RPM; HIGH: 10 to 1000 RPM.

Signal Point:

Speed at which relay will de-energize. Recommended to be 15-20% lower than pick-up point.

Start-up Delay:

Adjustable up to 45 seconds.

Radial Load on Input Shaft:

125 lbs maximum.

End Thrust on Input Shaft:

100 lbs maximum.

Rotation:

Either clockwise or counter-clockwise.

Driving Torque:

1"/lb maximum.

Shaft:

5/8" diameter with 3/16" x 7/8" key.

Weight:

5 lbs (2.3 kg).

Agency Approvals:

cUL, UL.

Approvals

• UL-Power Circuit & Motor-mounted Apparatus-Canada
• UL-Power Circuit & Motor-mounted Apparatus-US
• UL-Telemetering Equipment-Canada

Drawings

• CAD Drawing in format .DWG
• Adobe Reader in format .PDF