TE Connectivity M20-P-C5A 1SNA166776R0700 is an ENTRELEC ESSAILEC 20-point multicircuit test socket with clip connections for electrical measurement, monitoring, protection, commissioning and maintenance applications.
£114.91
The TE Connectivity M20-P-C5A (1SNA166776R0700) is an ENTRELEC ESSAILEC 20-point multicircuit test socket designed to provide an organised interface for electrical testing, measurement, monitoring and commissioning. It forms part of the ESSAILEC test block system used in secondary circuits associated with current and voltage transformers, meters and protection relays.
The M20-P-C5A uses a 20-way socket configuration with clip connection technology, allowing multiple test circuits to be grouped within a single compact assembly. ESSAILEC plug-and-socket technology supports simultaneous testing of multiple circuits and helps engineers carry out maintenance or equipment replacement without repeatedly disturbing permanent field wiring.
The ESSAILEC system incorporates make-before-break contact operation, coding between compatible plugs and sockets and protection against reverse plug insertion. This makes the M20-P-C5A particularly suitable for professional protection, metering and monitoring panels where reliable, repeatable and clearly organised test access is required.
ESSAILEC test blocks are designed to simplify testing operations within secondary circuits connected to current transformers, voltage transformers, sensors, meters and protection relays. The plug-and-socket architecture allows test equipment to be introduced through a dedicated interface for measurement, monitoring, injection, servicing and equipment replacement.
The M20-P-C5A extends this concept to a 20-point multicircuit format, providing a practical way to organise numerous test connections within protection and metering panels. ESSAILEC coding, reverse-insertion protection and make-before-break contact operation help create repeatable testing procedures while reducing unnecessary manipulation of permanent installation wiring.
| Manufacturer | TE Connectivity / ENTRELEC |
|---|---|
| Series | ESSAILEC |
| Model | M20-P-C5A |
| Manufacturer part number | 1SNA166776R0700 |
| Product type | Multicircuit test socket |
| Socket configuration | 20-point |
| Connection technology | Clip connection |
| Protection at socket | IP20 |
| Protection with appropriate cover | IP40 |
| Test system | ESSAILEC plug-and-socket |
| Contact principle | Make-before-break |
| Application | Current and voltage measurement, monitoring, injection and testing circuits |
| Coding | ESSAILEC plug/socket coding system |
| Reverse insertion protection | Yes |
| Pack quantity | 5 |
| EAN | 3472591667769 |
The M20-P-C5A is an ENTRELEC ESSAILEC 20-point multicircuit test socket designed for electrical measurement, monitoring, protection, commissioning and maintenance applications.
The M20-P-C5A is a 20-point multicircuit socket, allowing numerous test connections to be organised within a single ESSAILEC assembly.
The M20-P-C5A uses clip connection technology as part of its fixed multicircuit ESSAILEC socket design.
The ESSAILEC socket provides IP20 protection, increasing to IP40 when the appropriate protective cover is installed.
It is designed for protection, metering, current and voltage measurement, monitoring and commissioning systems, including secondary circuits associated with transformers, sensors, meters and protection relays.
TE Connectivity ENTRELEC ESSAILEC test blocks provide dependable, organised interfaces for measurement, monitoring, commissioning and maintenance operations across industrial and utility protection and metering systems.
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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...