About us

Rayleigh Instruments Limited

Established in 1964 we are one of the UK's leading manufacturers and suppliers of process control instrumentation equipment. We stock an extensive range of products including digital and analogue instrumentation, current transformers, safety relays, electrical transducers, industrial switching relays, measuring relays, timers, earth leakage relays to mention just a few.

We also design and manufacture a number of products for railway rolling stock including audible devices, illuminated displays, door systems and buttons, speed controllers and thermostats.


Products

DBP816 - Split Core Current Transformers - Measuring

DBP816 - Split Core Current Transformers - Measuring

Split Core measuring current transformer Ranges: 2000 to 5000A (1A or 5A Secondary) Busbar window : 80 x 160mm Unit Dimensions : H=250mm, x W=186mm, D...

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DBP88 - Split Core Current Transformers - Measuring

DBP88 - Split Core Current Transformers - Measuring

Split Core measuring current transformer Ranges: 250 to 1000A (1A or 5A Secondary) Busbar window : 80 x 80mm Unit Dimensions : H=153.8mm, x W=145mm, D...

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DIN standard shunts

DIN standard shunts

DER Shunts A range of DIN standard shunts that can measure DC current and provide a proportional millivolt output signal. Features: Output 60...

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Electrical Measuring Transducers

Electrical Measuring Transducers

We are widely regarded as one of the leading Electrical Measuring Transducers providers and are confident in both our product and customer service abi...

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Electronic Monitoring Relays

Electronic Monitoring Relays

Providing quality products at competitive prices is our aim here at Rayleigh Instruments Limited. We pride ourselves on being a leading Electronic Mon...

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Electronic Timing Relays

Electronic Timing Relays

If it’s Electronic Timing Relays you are looking for then look no further. Rayleigh Instruments Limited have been helping our clients source their pro...

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General Purpose Relays

General Purpose Relays

Thanks for visiting our page on Find the Needle. If you are looking to source General Purpose Relays then Rayleigh Instruments Limited can help you. S...

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HT1B and HT2B - DC Current Transformers / Transducers - Torroidal

HT1B and HT2B - DC Current Transformers / Transducers - Torroidal

DC current transformer/transducer - to measure DC current and deliver a proportional DC analogue output (formerly HT35 and HT80). DC Current measureme...

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I/O & Alarm Pulse Counting Module

I/O & Alarm Pulse Counting Module

I/O & alarm pulse counting module for use with Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. Digital I/O and alarm pulse counting mo...

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IF96001 - RS485 Communication Module

IF96001 - RS485 Communication Module

RS485 communications module for use with Nemo 96HDL, Nemo 96 HD (2 slot), Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. MODBUS/JBUS ...

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IF96002 - RS232 Communication Module

IF96002 - RS232 Communication Module

RS232 communications module for use with Nemo 96HDL, Nemo 96 HD (2 slot), Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. RS232-C 38.4...

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IF96004 - Dual Analogue Output Module

IF96004 - Dual Analogue Output Module

Dual analogue output module for use with Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. 2 analogue outputs 0…20mA/4…20mA Accuracy Cla...

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IF96005 - Dual Alarm Module

IF96005 - Dual Alarm Module

Dual alarm module for use with Nemo 96 HD (2 slot), Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. 2 independently configurable insul...

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IF96007 - PROFIBUS Communication Module

IF96007 - PROFIBUS Communication Module

PROFIBUS communications module for use with Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. EN50170 3Mb/s max baud rate

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IF96009 - LonWorks Communication Module

IF96009 - LonWorks Communication Module

LonWorks communications module for use with Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. LonWorks communication Transceiver FTT10

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IF96010 - I/O & Alarm Pulse Counting Module

IF96010 - I/O & Alarm Pulse Counting Module

I/O & alarm pulse counting module for use with Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. Digital I/O and alarm pulse counting mo...

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IF96013 M-Bus communications module

IF96013 M-Bus communications module

M-Bus communications module for use with Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. M-Bus communication EN1434-3 9,600bit/s max b...

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IF96014 Bacnet communications module

IF96014 Bacnet communications module

BACNET RS485 communications module for use with Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. BACNET RS485 communication ‘Native BAC...

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Kilowatt Hour Meters

Kilowatt Hour Meters

Here at Rayleigh Instruments Limited we are a dynamic company always looking to improve all aspects of our business. If you have an enquiry regarding ...

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Load Monitors

Load Monitors

Rayleigh Instruments Limited are committed to providing the highest quality service to all customers. If you are looking for Load Monitors then we wil...

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Measuring Transducers

Measuring Transducers

Our range of Electrical Measuring Transducers includes; DC current/voltage measuring transducer AC current transducer AC voltage transducer DC ...

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Memory and RS485 communications module

Memory and RS485 communications module

RS485 communications and memory module for use with Nemo 96 HD (4slot) and Nemo 96HD+ multifunction power monitors. Memory and RS485 communications > ...

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Monitoring Relays

Monitoring Relays

When it comes to Monitoring Relays, Rayleigh Instruments Limited are a market leader. Please contact us on 01268 749300 for more information and we wi...

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MRJ385 (EasyWire) Multifunction Power Meter

MRJ385 (EasyWire) Multifunction Power Meter

MRJ385 Multi-Function Power Meter RJ45 current input Built in single pulsed output and RS485 modbus DIN 96x96mm flush mounting 3 phase 4 wire unbalanc...

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Multifunction Power Meters

Multifunction Power Meters

If you are looking for Multifunction Power Meters then look no further. We are able to offer an extensive and comprehensive range, so please visit ...

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Multifunction Power Meters

Multifunction Power Meters

Being regarded as one of the UK's leading electronic instrumentation specialists, we believe we can meet any of your Multifunction Power Meters requi...

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Nemo 72-b - Multifunction Indicators - Panel Mounting

Nemo 72-b - Multifunction Indicators - Panel Mounting

Energy monitoring indicators. 72 x 72mm flush panel mounting Single phase & 3 phase (3 or 4 wire) network unbalanced load Voltage Current Neutral curr...

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Nemo 72L Multifunction Power Meter - Panel Mounting

Nemo 72L Multifunction Power Meter - Panel Mounting

Multifunction power monitor / kilowatt hour meter / active energy meter 72 x 72mm flush panel mounting Single phase & 3 phase (3 or 4 wire) network un...

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Nemo 96 HD - Multifunction Power Meter - Panel Mounting - (4 Slot)

Nemo 96 HD - Multifunction Power Meter - Panel Mounting - (4 Slot)

Multifunction power meter / kilowatt hour meter / active energy monitor. 96 x 96mm flush mounting Single phase or 3 phase (3 or 4 wire) network unbala...

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Nemo 96 HD+ - Multifunction Power Meter - Panel Mounting - (4 Slot)

Nemo 96 HD+ - Multifunction Power Meter - Panel Mounting - (4 Slot)

Multifunction power meter / kilowatt hour meter / active energy monitor. 96 x 96mm flush mounting Single phase or 3 phase (3 or 4 wire) network unbala...

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Contact Us

Rayleigh Instruments Limited

  • Raytel House, Cutlers Road, South Woodham Ferrers
  • Chelmsford
  • Essex
  • CM3 5WA

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