TE Connectivity PC-E-C5A 1SNA166769R1000 is an ENTRELEC ESSAILEC test socket designed to provide controlled plug-in access for measurement, monitoring, commissioning and maintenance of secondary electrical circuits.
Why Choose the TE Connectivity PC-E-C5A ESSAILEC Test Socket?
The TE Connectivity PC-E-C5A 1SNA166769R1000 is an ENTRELEC ESSAILEC test socket designed to provide controlled access to secondary electrical circuits used for current and voltage measurement, monitoring and protection. The ESSAILEC system is widely suited to switchgear, metering panels and protection installations where engineers need a convenient interface for commissioning, testing and maintenance.
As part of the ESSAILEC plug-and-socket system, the PC-E-C5A enables test equipment to interface with permanently installed circuits without repeatedly altering the fixed panel wiring. ESSAILEC test blocks support operations including current and voltage measurement, monitoring, signal injection and the repair or replacement of meters and protection relays connected to transformer and sensor secondary circuits.
The ESSAILEC platform incorporates features intended to improve test safety and efficiency, including coded plug-and-socket arrangements, protection against reverse plug insertion and individual traceability on the insulating body. Multiple mounting and connection technologies within the range allow ESSAILEC components to be integrated into a variety of industrial and utility panel designs.
Key Advantages
Dedicated ENTRELEC ESSAILEC test socket for secondary electrical circuits.
Provides a convenient plug-and-play interface for electrical testing and maintenance.
Supports current and voltage measurement, monitoring and signal injection.
Helps simplify meter and protection-relay testing, repair and replacement.
ESSAILEC coding helps reduce the risk of connection errors between different circuits.
Designed for integration into professional switchgear, metering and protection installations.
Key Features
TE Connectivity ENTRELEC ESSAILEC range.
PC-E-C5A product designation.
Fixed ESSAILEC test socket / connector.
Designed for transformer and sensor secondary circuits.
Plug-and-socket architecture for repeatable test access.
ESSAILEC system supports simultaneous testing of multiple circuits.
Coded system helps prevent mismatching between test circuits.
Protection against reverse insertion of compatible plugs.
Individual component traceability within the ESSAILEC system.
Suitable for industrial power, utility and electrical protection applications.
Reliable Access for Measurement and Protection Circuits
ESSAILEC test blocks are engineered to make testing operations on transformer and sensor secondary circuits easier to perform. Combining a fixed socket with a removable plug allows technicians to connect measurement or test equipment through a defined interface, reducing the need to disconnect and reconnect permanent installation wiring during routine work.
The system is suitable for measurement, monitoring, injection, commissioning and maintenance procedures involving meters and protection relays. Coding between ESSAILEC plugs and sockets helps minimise circuit-selection errors, while protection against reverse insertion contributes to dependable use in demanding switchgear and power-system environments.
Typical Applications
Current and voltage transformer secondary circuits.
Electrical metering and measurement panels.
Protection relay testing and commissioning.
Substation control and protection systems.
Industrial switchgear assemblies.
Power monitoring and distribution equipment.
Meter and protection-relay maintenance.
Electrical test and signal-injection systems.
Technical Specifications
Manufacturer
TE Connectivity
Brand / range
ENTRELEC
Series
ESSAILEC
Model
PC-E-C5A
Manufacturer part number
1SNA166769R1000
Product type
ESSAILEC test socket / connector
System type
Modular plug-and-socket test system
Application
Secondary current and voltage measurement and protection circuits
Socket protection
IP20
Protection with suitable cover
IP40
Maximum conductor capability within ESSAILEC connection range
up to 10 mm², depending on connection technology
Pack quantity
1
EAN
3472591667691
Frequently Asked Questions
What is the TE Connectivity PC-E-C5A 1SNA166769R1000?
The PC-E-C5A is an ENTRELEC ESSAILEC test socket designed to provide controlled access to secondary electrical measurement, monitoring and protection circuits.
What is the PC-E-C5A typically used for?
The PC-E-C5A is intended for ESSAILEC installations used for current and voltage measurement, monitoring, signal injection, commissioning and maintenance of secondary transformer and sensor circuits.
How does the ESSAILEC system simplify electrical testing?
The ESSAILEC system combines a permanently wired socket with a removable test plug, providing a plug-and-play test interface that reduces the need to disturb permanent panel wiring during routine testing and maintenance.
What protection does an ESSAILEC socket provide?
The ESSAILEC socket system provides IP20 protection, with protection increasing to IP40 when the appropriate cover is fitted.
Where is the PC-E-C5A normally installed?
The PC-E-C5A is suitable for professional installations including switchgear, substations, metering panels, power monitoring equipment and protection-relay systems using compatible ESSAILEC components.
Trusted for Electrical Testing and Protection Systems
TE Connectivity ENTRELEC ESSAILEC test blocks provide a modular connection platform for measurement, monitoring, commissioning and protection applications where efficient and repeatable access to secondary electrical circuits is required.
Manufacturer
TE Connectivity
Brand / range
ENTRELEC
Series
ESSAILEC
Model
PC-E-C5A
Manufacturer part number
1SNA166769R1000
Product type
ESSAILEC test socket / connector
System type
Modular plug-and-socket test system
Application
Secondary current and voltage measurement and protection circuits
Socket protection
IP20
Protection with suitable cover
IP40
Maximum conductor capability within ESSAILEC connection range
up to 10 mm², depending on connection technology
Pack quantity
1
EAN
3472591667691
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.
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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...