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

3 Phase measuring current transformers

3 Phase measuring current transformers

3 Phase measuring current transformers. Ranges: 60 to 250A (330mVSecondary) Internal safety circuitry is provided which automatically limits the outpu...

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AVKIT4 - D4 Flush Mounting Adaptor

AVKIT4 - D4 Flush Mounting Adaptor

4 module DIN rail energy meters flush panel mounting kit.

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AVKIT4 - D4 Flush Mounting Adaptor

AVKIT4 - D4 Flush Mounting Adaptor

4 module DIN rail energy meters flush panel mounting kit.

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Coded Magnetic Safety Switches

Coded Magnetic Safety Switches

We are able to offer a full range of Coded magnetic safety switch with monitored relay outputs. For complete details of the products we have availa...

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Conto 72-Sh - kWh Energy Meters - Panel Mounting

Conto 72-Sh - kWh Energy Meters - Panel Mounting

Kilowatt hour meter / active energy meter 72 x 72mm flush panel mounting Single phase & 3 phase (3 or 4 wire) network unbalanced load Active energy cl...

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Conto 72-Sh - Multifunction Power Meters - Panel Mounting

Conto 72-Sh - Multifunction Power Meters - 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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Conto D2 - B & D MID Certified Active Energy Meter - DIN Rail Mounting

Conto D2 - B & D MID Certified Active Energy Meter - DIN Rail Mounting

Kilowatt hour meter / active energy meter B and D MID Certified active energy meter 2 module DIN rail mounting Single phase Direct connection up to 63...

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Conto D2 - kWh Energy Meters - DIN Rail mounting

Conto D2 - kWh Energy Meters - DIN Rail mounting

Kilowatt hour meter / active energy meter 2 module DIN rail mounting Single phase network Active energy class 1 (EN 62053-21) Partial active energy (r...

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Conto D4-Pd - kWh Energy Meters - DIN Rail mounting

Conto D4-Pd - kWh Energy Meters - DIN Rail mounting

Kilowatt hour meter / active energy meter 4 module DIN rail mounting 3 phase (3 or 4 wire) network unbalanced load Active energy class 1 (EN62053-21) ...

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Conto D4-Pd M-Bus - kWh Energy Meters - DIN Rail mounting

Conto D4-Pd M-Bus - kWh Energy Meters - DIN Rail mounting

Kilowatt hour meter / active energy meter 4 module DIN rail mounting 3 phase (3 or 4 wire) network unbalanced load Direct connected up to 63A 190…440V...

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Conto D4-Pd MID - B & D MID Certified Active Energy Meter - DIN Rail Mounting

Conto D4-Pd MID - B & D MID Certified Active Energy Meter - DIN Rail Mounting

Kilowatt hour meter / active energy meter B and D MID Certified active energy meter 4 module DIN rail mounting Direct connection up to 63A 3 phase 4 w...

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Conto D4-Pt - Energy Meter - DIN Rail Mounting

Conto D4-Pt - Energy Meter - DIN Rail Mounting

Kilowatt hour meter / active energy meter 4 module DIN rail mounting Single phase or 3 phase (3 or 4 wire) network unbalanced load Total active energy...

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Conto D4-Pt M-Bus - Energy Meter - DIN Rail Mounting

Conto D4-Pt M-Bus - Energy Meter - DIN Rail Mounting

Kilowatt hour meter / active energy meter 4 module DIN rail mounting Single phase or 3 phase (3 or 4 wire) network unbalanced load Total active energy...

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Conto D4-Pt MID - B & D MID Certified Active Energy Meter - DIN Rail Mounting

Conto D4-Pt MID - B & D MID Certified Active Energy Meter - DIN Rail Mounting

Kilowatt hour meter / active energy meter B and D MID Certified active energy meter 4 module DIN rail mounting 3 phase (3 or 4 wire) network unbalance...

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Conto D4-Sh - kWh Energy Meters - DIN Rail mounting

Conto D4-Sh - kWh Energy Meters - DIN Rail mounting

Kilowatt hour meter / active energy meter 4 Module DIN Rail mounting Single phase & 3 phase (3 or 4 wire) network unbalanced load Active energy class ...

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Conto D4-Sh - Multifunction Power Meters - DIN Rail mounting

Conto D4-Sh - Multifunction Power Meters - DIN Rail mounting

Multifunction power meter / Kilowatt hour meter / energy monitoring 4 Module DIN Rail mounting Single phase & 3 phase (3 or 4 wire) network unbalanced...

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Current and Voltage Transformers - Special Order

Current and Voltage Transformers - Special Order

Special order current and voltage transformers including:- Measuring - Ring Type Protection - Ring Type Measuring - Ring Type - High Accuracy Protecti...

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Current Transformers

Current Transformers

3 Phase measuring current transformers. Ranges: 60 to 200A (330mVSecondary) Internal safety circuitry is provided which automatically limits the outpu...

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Current Transformers - General Information and Selection Tables

Current Transformers - General Information and Selection Tables

General information on current transformer applications and current transformers selection tables.

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D6DC Transducer

D6DC Transducer

DC current/voltage measuring transducer Unit Dimensions : H=92.5, W=105, D=69mm

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DBP23 - Split Core Current Transformers - Measuring

DBP23 - Split Core Current Transformers - Measuring

Split Core measuring current transformer Ranges: 100 to 400A (1A or 5A Secondary) Busbar window : 20 x 30mm Unit Dimensions : H=109mm, x W=89mm, D=40m...

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DBP58 - Split Core Current Transformers - Measuring

DBP58 - Split Core Current Transformers - Measuring

Split Core measuring current transformer Ranges: 250 to 1000A (1A or 5A Secondary) Busbar window : 50 x 80mm Unit Dimensions : H=145mm, x W=115mm, D=5...

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DBP812 - Split Core Current Transformers - Measuring

DBP812 - Split Core Current Transformers - Measuring

Split Core measuring current transformer Ranges: 500 to 1600A (1A or 5A Secondary) Busbar window : 80 x 120mm Unit Dimensions : H=195.8mm, x W=145mm, ...

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 EM368 Kilowatt hour meter / active energy meter

EM368 Kilowatt hour meter / active energy meter

96 x 96mm flush panel mounting Single phase and 3 phase (3 or 4 wire) network unbalanced load Active energy class 1 (EN62053-21) –/5A or 1A current t...

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 PRO-2D Kilowatt hour meter / active energy meter

PRO-2D Kilowatt hour meter / active energy meter

36mm wide DIN rail mounting Single phase LCD display Up to 80A direct connection Accuracy class 1 (EN62053-21) Pulsed output 230V 50/60Hz measured vo...

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 TAQC - Current Transformers - Measuring

TAQC - Current Transformers - Measuring

Measuring current transformer (formerly TAQ10) Ranges: 5 to 300A (1A or 5A Secondary) Bar primary Unit Dimensions : H=107, W=85, D=131mm

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 TAS227 - Three Phase Current Transformers - Measuring

TAS227 - Three Phase Current Transformers - Measuring

3 Phase measuring current transformers. Ranges: 50 to 500A (5A Secondary) Aperture 3 x 27mm diameter 51mm hole centres Unit Dimensions : H=84, W=185, ...

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 TASR Horizontal Mounting - Current Transformers - Measuring

TASR Horizontal Mounting - Current Transformers - Measuring

Measuring current transformer (formerly TAS127H) Ranges: 400 to 4000A (1A or 5A Secondary) Busbar window 38 x 127mm Unit Dimensions : H=99, W=160, D=8...

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 TASS - Current Transformers – Measuring and Protection

TASS - Current Transformers – Measuring and Protection

Measuring and protection current transformer (formerly TAS127B) Ranges: 400 to 4000A (1A or 5A Secondary) Busbar window 127 x 54mm Unit Dimensions : H...

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 TM8P - Programmable Isolated Transducer - True RMS

TM8P - Programmable Isolated Transducer - True RMS

The TM8P is a programmable transducer that can be used to measure apparent reactive - active power, power factor, phase angle, average power and frequ...

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News

Elster Metering National Stockists

Elster Metering National Stockists

Since 2014, we have grown into the UK's largest ELSTER energy meter stockist.

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CEF - Electrical Wholesale Show

CEF - Electrical Wholesale Show

Rayleigh Instruments exhibit at inaugural CEF Live event.

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Hannover Messe a Great Success!

Hannover Messe a Great Success!

Huge interest at Hannover for our rayleighconnect and easywire systems.

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See us at Hannover Messe

See us at Hannover Messe

We are exhibiting at Hannover Messe from 13th to 17th April 2015 | Hall 12 Stand B33

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Solar PV Range a Great Success at EcoBuild 2012!

Solar PV Range a Great Success at EcoBuild 2012!

The EcoBuild 2012 exhibition at Excel London was extremely well attended and the steady stream of interested installers and wholesalers kept us very b...

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KDS Solutions - on the Move

KDS Solutions - on the Move

Rayleigh Instruments would like to congratulate KDS Solutions on your move to a new larger manufacturing facility. Although moving can be difficult,...

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EasyWire - Save Time, Save Money...

EasyWire - Save Time, Save Money...

Rayleigh Instruments has introduced a novel method of wiring and installing power meters and current transformers. The new 'EasyWire' system substanti...

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Solar PV at Ecobuild Exhibition

Solar PV at Ecobuild Exhibition

See our Solar PV Products at Ecobuild - ExCel, London from 20th March Make savings, not compromises... All FiT installations require generation m...

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Contact Us

Rayleigh Instruments Limited

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

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