AC Zero Speed Switches

Heavy Duty Zero-Speed Alarm Switch -- SITRANS WM100
from Siemens Process Instrumentation

verview. SITRANS WM100 is a heavy-duty zero-speed alarm switch. This non-contacting unit provides cost-effective equipment protection even in the harshest conditions. Benefits. Up to 100 mm (4 inch) gap between SITRANS WM100 and targets. Rugged, low maintenance suitable for tough environments. 1... [See More]

  • Power Supply: AC
  • Number of Relays: 1
  • Technology: Magnetic Proximity
  • Contacts: SPDT
Inductive Rotation Control -- S3431 CRT30 – R10L
from Fargo Controls, Inc.

The CRT30 is a combination of a 30mm diameter inductive sensor and rotation control device. The operating distance of the sensor is between 4 and 6 mm on metallic material. The wide power supply range (18-50 DC and 18-240 AC), various programmable functions, and output relay make this device... [See More]

  • Power Supply: AC; DC
  • Number of Relays: 1
  • Technology: Magnetic Proximity
  • AC Voltage Rating: 18 to 240
Rotary Airlock Shaft Monitoring Switch -- Rotospeed Switch
from Rotolok Valves, Inc.

The Rotolok Rotospeed Switch can be used whenever and wherever shaft monitoring is required. Its compact design and trouble free operation makes it ideal for Rotary Airlock, Screw Conveyor and Bucket Elevator applications, for overspeed and underspeed detection. The Rotospeed Switch was developed... [See More]

  • Power Supply: AC; DC
  • Operating Range: 2.5 to 200
  • Technology: Electromechanical
  • Number of Relays: 1
Programmable Electronic Rotation And Stop Control -- S3426D CRTP 24Vdc/ac
from Fargo Controls, Inc.

This device is composed of a central electronic unit that plugs into a socket and an inductive, capacitive or photoelectric sensor. Since the sensor is separate any number of sensors can be used allowing for this unit to operate in a number of applications. [See More]

  • Power Supply: AC; DC
  • Operating Range: 0.1000 to 24000
  • Technology: Electronic
  • Number of Relays: 1
PRX 120 Proximity Speed Switch -- PRX120
from Control Concepts, Inc.

The Control Concepts Prox Switch is a micro-controlled, field adjustable, multi-setpoint speed / rate monitor that provides 4 character alpha numeric visual indication and relay output. The unit offers many versatile features that provide flexibility in application and confidence in sensing. Full... [See More]

  • Power Supply: AC; DC (optional feature)
  • Operating Range: 1 to 60000
  • Technology: Magnetic Proximity
  • Number of Relays: 1
Speed Switch -- FS 90
from Baumer Ltd.

Speed switches are intended for monitoring speed limits. Independent from other regulating systems, speed switches take over safety-relevant speed monitoring tasks at machines and production facilities. Speed switches are available both as digital and electronic. A versatile product range. rugged,... [See More]

  • Power Supply: AC; DC
  • Operating Range: 850 to 4900
  • Technology: Electromechanical
  • AC Voltage Rating: 230
Digital Speed Switch -- DR1000
from Electro-Sensors, Inc.

Digital Speed Switch. Features. • Works with remote / external pulse frequency. output sensor (NPN, PNP, or Mag Pick-up). • DPDT relay output. • Under-speed setpoint adjustment from. 0.5-5,000 rpm (at 8 PPR). • Terminal blocks for easy wiring. • 115, 230 VAC (50-60 Hz) and... [See More]

  • Power Supply: AC; DC (optional feature)
  • Number of Relays: 1
  • Technology: Magnetic Proximity
  • Contacts: DPDT
Rotoguard® III -- S-A-3-B-1-Z-1
from Control Concepts, Inc.

The Rotoguard III is a switch device for sensing the reduction, increase or loss in rotational motion for many types of moving equipment. The unit can detect changes in motion between 1 and 400 RPM depending on the model selected. The Rotoguard III may be direct coupled or driven through belts and... [See More]

  • Power Supply: AC
  • Operating Range: 1 to 300
  • Technology: Electronic
  • Number of Relays: 1
Economical Shaft Speed Switch -- DMS100
from Electro-Sensors, Inc.

Economical Shaft Speed Switch. • Works with remote/external pulse. frequency output sensor (NPN,. PNP, Mag Pick-up and TTL). • Over-speed or under-speed configuration. • 5 RPM to 100 RPM with 8 PPR input (DMS100). • 100 RPM to 5000 RPM with 4 PPR input (DMS5000). • 2 SPDT... [See More]

  • Power Supply: AC; DC (optional feature)
  • Operating Range: 5 to 100
  • Technology: Magnetic Proximity
  • Number of Relays: 2
Reverse Rotation Detector -- UDS1000
from Electro-Sensors, Inc.

Reverse Rotation Detector. Features. • Relay changes state when shaft direction reverses. • Relay resets when reverse motion stops. • Easy installation and calibration. • Cast aluminum switch housing NEMA 4X, 7, 9 rated. • 115 VAC standard, 12 VDC, 24 VDC, 230 VAC options. [See More]

  • Power Supply: AC; DC (optional feature)
  • Operating Range: 0.5000 to 5000
  • Technology: Magnetic Proximity
  • Number of Relays: 1
Shaft Speed Switch -- LRB1000
from Electro-Sensors, Inc.

Shaft Speed Switch. Features. • Failsafe operation. • Setpoint ranges: 1-100 and 10-1000 rpm. • Built-in start delay. • DIN rail or stand alone mounting. • Dial-in calibration does not require power. • ETL approved to UL 508 standard. The LRB1000 (single relay, 1... [See More]

  • Power Supply: AC; DC (optional feature)
  • Number of Relays: 1
  • Technology: Magnetic Proximity
  • Contacts: SPDT
Shaft Speed Switch -- M100
from Electro-Sensors, Inc.

Shaft Speed Switch. Features. • Easy installation and calibration. • Rugged - dust, dirt, and grease proof. • 115 VAC, 50-60 Hz only. • Failsafe Operation. Note: Electro-Sensors recommends the new and improved M100T or M5000T design for new designs and when replacing the M100 or... [See More]

  • Power Supply: AC
  • Number of Relays: 1
  • Technology: Magnetic Proximity
  • Contacts: SPDT
Shaft Speed Switch -- M100T
from Electro-Sensors, Inc.

Shaft Speed Switch. Features. • Internal sensor. • SPDT relay output. • 5-100 rpm (M100T), 100-5,000 rpm. (M5000T) under-speed setting. • Terminal block for easy wiring. • 115, 230 VAC (50-60 Hz) and 12, 24 VDC power options. • Works with Electro-Sensors magnetic pulser... [See More]

  • Power Supply: AC; DC (optional feature)
  • Operating Range: 5 to 100
  • Technology: Magnetic Proximity
  • Trip Point: 5 to 100
Shaft Speed Switch -- SCP1000
from Electro-Sensors, Inc.

Shaft Speed Switches. Features. • Single or double relay setpoint(s). • Failsafe operation. • Built-in start delay. • Selectable under-speed or over-speed. • Setpoint ranges: 1-100 and 10-1,000 rpm. • Visual setpoint adjustment with digital accuracy. • Class I, Div... [See More]

  • Power Supply: AC; DC (optional feature)
  • Number of Relays: 1
  • Technology: Magnetic Proximity
  • Contacts: DPDT
Slow Speed Switch -- SS110
from Electro-Sensors, Inc.

Slow Speed Switch. Features. • Dial-in calibration does not require power. • Setpoint ranges: 0.01 - 0.99 and 0.1 - 9.9 rpm. • ETL approved to UL 508 standard. • Failsafe operation in under-speed mode. • DIN rail or stand alone mounting. The SS110 is completely field... [See More]

  • Power Supply: AC; DC (optional feature)
  • Number of Relays: 1
  • Technology: Magnetic Proximity
  • Contacts: SPDT