- Adhesives & Sealants
-
ATEX
- ATEX Junction Boxes & Electrical Enclosures
- ATEX Control Sensors
- ATEX Intrinsically Safe Isolation Barriers
- ATEX Switches, Pushbuttons & Control Stations
- ATEX Encoders
- ATEX Mobile Devices & Communication
- ATEX Level & Flow Sensors
- ATEX Lighting & Flashlights
- ATEX Sounders and Beacons
- ATEX Accessories & Fittings
- ATEX Process Sensors
- ATEX Plugs & Sockets
- ATEX Power Supplies
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Automation & Control Components
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Automation Control
- Automation & Process Control Accessories
- DOL Starters
- Drives
- Electrical Contactors
- Electrical Control Cabinets
- Motors and Motor Drives
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- Motor Starter Accessories
- Overload Relays
- Panel Displays & Instrumentation (Timers/Counters)
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- Panel Meters & Accessories
- PLCs and Accessories
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Industrial Automation and Control Switches
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Automation Control
- Batteries
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Cable Accessories
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Installation, isolation and connection material
- Adhesive tape
- Assortment box for installation- and connection material
- Assortment box with heat-shrink tubing segments
- Cable coding system
- Cable end sleeve
- Crimp cable lug for copper conductors
- Heat-shrink crimp connection
- Round or flat plug/receptacle
- Solderless copper terminals for copper conductors
- Straight-through joint
- Cable Wrap
- Branch-splice joint (set)
- Installation material for cables and tubes
- Protection material and work clothes
- Tools (Press, cut and isolate)
- Energy distribution systems
- Circuit breakers and fuses
- Protective hose systems
- Low-voltage industrial components
- Domestic Switching Devices
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Terminal Blocks
- Neutral busbar
- Cross-connector for terminal block
- Labelling for terminal block
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- Fuse terminal block
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- Ground terminal block
- (Knife) disconnect terminal block
- Component terminal block
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- End bracket for terminal block
- Neutral disconnect terminal block
- Panel feed-through terminal block
- Single- and multi-pole terminal strip
- Multi level installation terminal block
- Component plug terminal block
- Shield connection clamp
- Terminal block connector
- Test plug for terminal blocks
- Accessories/spare parts for terminals
- Diode module
- Industrial socket/plug applications
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Circuit Protection
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Circuit Protection
- Busbar
- Circuit Breaker Accessories
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- Circuit Trips
- Distribution Boards
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- MCBs
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Fuses & Fuse Accessories
- Automotive Fuses
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- Neutral Links
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- Electrical Installation Parts and Accessories
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- Racks, Cabinets & Enclosures
- Electrical Transformers
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Circuit Protection
- Clean Room
- Computing & Peripherals
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Electrical Connectors & Cables
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Electrical and Electronics Connectors
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- XFP & SFP
- Electrical Test & Measurement Equipment
- Enclosures, Storage & Material Handling
- HVAC, Fans & Thermal Management
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Network, Power & Signal Connectors
- Network & Telecom Connectors
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Electrical Power Connectors
- Compact Power Connectors
- DIN 43650 Solenoid Connectors
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- Heavy Duty Power Connector Accessories
- Heavy Duty Power Connector Kits
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- Industrial Interlocks
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- Lighting Accessories
- Lighting Connectors
- Electrical Adapters
- USB, D-sub & Computing Connectors
- Panel Meters & Accessories
- Passive Components, Crystals & Oscillators
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Pneumatics, Hydraulics & Power Transmission
- Electrical Actuators and Accessories
- Hydraulic Valves & Manifolds
- Pneumatic Adaptors, Fittings & Couplings
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- Pneumatic Cylinders & Actuators
- Pneumatic Instrumentation & Switches
- Pneumatic Tubing & Air Hose
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Pneumatic Valves & Manifolds
- Blanking Plates for Pneumatic Control Valves
- Manifold Bases, Sub Bases & End Bases for Pneumatic Control Valves
- Pneumatic Manual Control Valves
- Pneumatic Solenoid Coils
- Pneumatic Solenoid/Pilot-Operated Control Valves
- Pneumatic Valve Mounting Equipment & Accessories
- Pneumatic Valve Repair & Maintenance Kits
- Power Transmission - Couplings
- Power Supplies
- Fire Alarms, Safety Control & Security
- Semiconductor Devices
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Sensors, Encoders & Transducers
- Process Control Encoders
- Process Automation
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Process Control Sensors
- Position Sensors
- Barcode Readers
- Capacitive Sensors
- Colour Sensors
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- Current Sensors
- Distance Sensors
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- Flow Sensors
- Force Sensors & Load Cells
- Hall Effect Sensors
- Heavy duty connectors
- IC Sensors
- Water Level & Liquid Level Sensors
- Light Sensors
- Magnetic Sensors
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- Oxygen Sensors
- Photoelectric Sensors & Infrared Sensors
- Pressure Sensors
- Proximity Sensors / Proximity Switches
- Sensor Accessories
- Sensor Cables & Connectors
- Sensor Covers
- Sensor Reflectors
- Sensor Switch Magnets - Reed Switches
- Sensors DIN connectors
- Sensors Round connectors
- Speed Sensors
- Temperature Sensors
- Thermocouples
- Electronic Tilt Sensors / Inclinometers
- Ultrasonic Proximity Sensors
- Vibration Sensors
- Vision Sensors
- Motion Sensors
- Humidity Sensors
- Infrared Sensors
- LiDAR Sensors
- Process Control Transducers
- Hand Tools & Supplies
- Computer Engineering Software & Licences
- Power Quality & Control
- PPE - Personal Protective Equipment
Kempston Controls is pleased to announce a classic British brand will return to UK ownership with our acquisition of MEM (Midland Electrical Manufacturing). The deal, completed on the 1st December 2021 includes Eaton’s MEM MEMSHIELD 1 & 2 and Cranes range. The aim is to continue MEM’s history of innovation by developing, manufacturing, and selling these dependable product ranges for years to come.
View the Range
- You are here: Home →
- Siemens →
- Automation & Control Components →
- Electronic and Electrical Relays
Our offices and warehouses will be closed on the 6th May for the national public holiday.
Our out-of-hours service will be available during this time.
Electronic and Electrical Relays
Showing 81 - 90 of 1722 results
3RN2011-1BA30
THERMISTOR MOTOR PROTECTION RELAY STANDARD EVALUATION UNIT 22.5 MM ENCLOSURE SCREW TERMINAL by Siemens
Estimated lead time: 6 to 7 days | Check Availability
Available for Back Order
3RQ3018-1AB01
OUTPUT COUPLER RELAY COUPLER, 1 CHANGE-OVER CONTACT HARD GOLD-PLATED CONTACTS 24 V AC/DC OVE by Siemens
Estimated lead time: 5 to 6 days | Check Availability
This product has to be ordered in multiples of 5.
Available for Back Order
3RQ3018-1AF00
OUTPUT COUPLER RELAY COUPLER, 1 CHANGE-OVER CONTACT 230 V AC/DC OVERALL WIDTH 6.2 MM by Siemens
Estimated lead time: 5 to 6 days | Check Availability
This product has to be ordered in multiples of 5.
Available for Back Order
3RQ3052-1SM50
OUTPUT COUPLER OPTOCOUPLER 1 NO TRIAC, INPUT 24 V DC OUTPUT 20-264 V AC, 2 A OVERALL WIDTH 6 by Siemens
This product has to be ordered in multiples of 5.
Available for Back Order
3RQ3118-2AB00
OUTPUT COUPLER WITH PLUG-IN RELAY, 1 CHANGE-OVER CONTACT SPRING-TYPE TERMINAL (PUSH-IN) 24 V by Siemens
This product has to be ordered in multiples of 5.
Available for Back Order
Available for Back Order
3RF2150-1BA22
SEMICONDUCTOR RELAY, 1PHASE, 22.5MM WIDTH, 50A, 24-230V/110-230VAC, SCREW TERMINAL by Siemens
Estimated lead time: 14 to 15 days | Check Availability
Available for Back Order
3RF2120-2AA45
SEMICONDUCTOR RELAY, 1-PHASE 3RF2 WIDTH 22.5 MM, 20A 48-600V / 4-30VDC SPRING-TYPE TERMINAL by Siemens
Estimated lead time: 14 to 15 days | Check Availability
Available for Back Order
3RB3046-1UW1
OVERLOAD RELAY, 12.5...50A ELECTRONIC FOR MOTOR PROTECTION SIZE S3 by Siemens
Estimated lead time: 5 to 6 days | Check Availability
Available for Back Order
Available for Back Order
