TE Connectivity 1SNA166512R1700 FIM20 is a 20-pole multicircuit plug with cover for compatible ENTRELEC ESSAILEC electrical test, measurement, metering and protection systems.
Why Choose the TE Connectivity 1SNA166512R1700 FIM20 Multicircuit Plug?
The TE Connectivity 1SNA166512R1700, manufacturer designation FIM20, is a 20-pole multicircuit plug with cover from the ENTRELEC ESSAILEC test block range. Designed for professional electrical testing and measurement systems, it provides a convenient plug-in interface for compatible ESSAILEC test bases used in current, voltage, metering and protection circuits.
ESSAILEC test systems are engineered to simplify testing operations in secondary circuits associated with current and voltage transformers and sensors. The FIM20 provides 20 connection positions in a single multicircuit plug, enabling multiple test circuits to be brought together in an organised and removable connection assembly.
The FIM20 features a white polycarbonate housing with a UL 94 V-0 flammability classification and an operating temperature range of -55 to +110 °C. Its approximate dimensions are 44 × 63 × 103.5 mm, while the supplied cover supports protection of the plug assembly when used as part of the coordinated ESSAILEC system.
Key Advantages
20-pole multicircuit plug for compatible ESSAILEC test block systems.
Supplied with cover as a coordinated test-system component.
Supports convenient plug-and-play testing of electrical measurement and protection circuits.
ESSAILEC coding arrangements help prevent incorrect connection between different circuits.
Suitable for current, voltage, metering and protection relay test applications.
Robust polycarbonate construction with UL 94 V-0 flammability performance.
Key Features
TE Connectivity ENTRELEC FIM20 multicircuit plug.
Part of the ESSAILEC test block system.
20-pole configuration.
Supplied as a plug with cover.
White housing.
Polycarbonate construction.
Approximate dimensions of 44 × 63 × 103.5 mm.
Operating temperature range of -55 to +110 °C.
UL 94 V-0 flammability classification.
Designed for compatible ESSAILEC multicircuit test assemblies.
Reliable Multicircuit Testing with the ESSAILEC System
ESSAILEC test blocks are designed to simplify operations including current and voltage measurement, monitoring, signal injection, meter servicing and protection relay testing in secondary electrical circuits. The FIM20 provides the removable 20-pole plug interface required for compatible multicircuit ESSAILEC configurations.
The coordinated plug-and-base principle allows engineers to connect test equipment efficiently while reducing the need to disturb permanent field wiring. ESSAILEC systems also incorporate coding and reverse-insertion protection features to help minimise connection errors during testing and maintenance procedures.
Typical Applications
ESSAILEC multicircuit test block systems.
Current transformer secondary circuit testing.
Voltage transformer secondary circuit testing.
Protection relay testing and maintenance.
Electricity meter testing and replacement.
Power monitoring and measurement systems.
Utility and substation control panels.
Industrial switchgear and protection panels.
Technical Specifications
Manufacturer
TE Connectivity
Brand / product family
ENTRELEC
Series
ESSAILEC
Part number
1SNA166512R1700
Manufacturer designation
FIM20
Product type
Multicircuit test plug with cover
Number of poles
20
Application
ESSAILEC electrical test and measurement systems
Housing colour
White
Housing material
Polycarbonate
Width
Approx. 44 mm
Height
Approx. 63 mm
Length / depth
Approx. 103.5 mm
Operating temperature
-55 to +110 °C
Flammability classification
UL 94 V-0
EAN
3472591665123
Customs tariff number
85369010
Pack quantity
1 piece
Frequently Asked Questions
What is the TE Connectivity 1SNA166512R1700 FIM20?
The 1SNA166512R1700 FIM20 is a 20-pole multicircuit plug with cover designed for compatible TE Connectivity ENTRELEC ESSAILEC electrical test block systems.
How many poles does the FIM20 have?
The FIM20 provides 20 poles, allowing multiple electrical test connections to be incorporated into a single removable plug assembly.
What is the FIM20 typically used for?
The FIM20 is used with compatible ESSAILEC equipment for applications such as current and voltage measurement, monitoring, test injection, meter servicing and protection relay testing.
What are the dimensions of the TE Connectivity FIM20?
The FIM20 has approximate overall dimensions of 44 × 63 × 103.5 mm.
What material is the FIM20 housing made from?
The FIM20 uses a white polycarbonate housing with a UL 94 V-0 flammability classification and an operating temperature range of -55 to +110 °C.
Trusted for Electrical Testing and Protection Systems
TE Connectivity ENTRELEC ESSAILEC test blocks and plugs provide coordinated connection solutions for current, voltage, metering and protection circuits, helping engineers carry out testing and maintenance while minimising disruption to permanent electrical wiring.
Manufacturer
TE Connectivity
Brand / product family
ENTRELEC
Series
ESSAILEC
Part number
1SNA166512R1700
Manufacturer designation
FIM20
Product type
Multicircuit test plug with cover
Number of poles
20
Application
ESSAILEC electrical test and measurement systems
Housing colour
White
Housing material
Polycarbonate
Width
Approx. 44 mm
Height
Approx. 63 mm
Length / depth
Approx. 103.5 mm
Operating temperature
-55 to +110 °C
Flammability classification
UL 94 V-0
EAN
3472591665123
Customs tariff number
85369010
Pack quantity
1 piece
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
What product ranges do you supply
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Can you help specify the correct part?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Do you have stock for urgent orders?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What are your delivery times and costs?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What about warranties, returns and faulty items?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...