TE Connectivity 1SNA166777R0000 M20-I-C5A is an ESSAILEC 20-circuit reverse-mounting socket rated at 8 A for industrial electrical measurement, protection, testing and control applications.
£128.70
The TE Connectivity 1SNA166777R0000, also identified as M20-I-C5A, is a specialised 20-circuit ESSAILEC multicircuit socket designed for electrical measurement, testing, protection and control applications. Part of the established TE Connectivity / Entrelec ESSAILEC range, it provides a compact and dependable interface for connecting multiple measurement or control circuits within industrial electrical systems.
The M20-I-C5A uses a reverse-mounting configuration and is designed to work with compatible ESSAILEC multicircuit plugs. The modular ESSAILEC architecture enables multiple circuits to be connected and disconnected through a dedicated plug-and-socket interface, helping simplify testing, commissioning, maintenance and equipment replacement.
Designed for demanding electrical installations, the ESSAILEC multicircuit platform has a rated current of 8 A and a short-circuit withstand capability ranging from 25 A for 5 s to 800 A for 25 ms. The grey M20-I-C5A socket weighs approximately 190 g and is supplied with the accessories required for its mounting arrangement together with two coding pins.
ESSAILEC multicircuit connectors provide a dedicated interface for grouping multiple electrical circuits into a single modular connection system. This arrangement can simplify commissioning, measurement, maintenance and equipment replacement by allowing compatible circuits to be connected through a purpose-designed plug-and-socket assembly.
The M20-I-C5A is specifically configured as a reverse-mounted 20-circuit socket and pairs with the compatible FIM20-I plug. Its combination of multicircuit connectivity, coding capability and industrial electrical ratings makes it suitable for protection panels, metering equipment, switchgear and other applications where reliable multi-pole test and control connections are required.
| Manufacturer | TE Connectivity / Entrelec |
|---|---|
| Series | ESSAILEC Multicircuits |
| Model | M20-I-C5A |
| Manufacturer part number | 1SNA166777R0000 |
| Product type | Multicircuit socket / fixed terminal block |
| Number of circuits | 20 |
| Mounting type | Reverse mounting |
| Colour | Grey |
| Rated current | 8 A |
| Short-circuit current | 25 A / 5 s to 800 A / 25 ms |
| Protection rating | IP20 without cover / IP40 with lid |
| Working temperature range | -10 to +55 °C |
| Storage temperature range | -25 to +70 °C |
| Compatible plug | FIM20-I |
| Coding | 2 × COP-E-1 coding pins supplied |
| Weight | approx. 190 g |
| Factory pack quantity | 1 |
| Country of origin | France |
| EAN | 3472591667776 |
The 1SNA166777R0000 is an ESSAILEC 20-circuit socket designed to provide a modular connection interface for electrical measurement, testing, protection and control circuits.
The M20-I-C5A is a 20-circuit multicircuit socket designed for use with compatible ESSAILEC connection equipment.
The ESSAILEC multicircuit system has a rated current of 8 A.
The M20-I-C5A is designed for use with the compatible FIM20-I ESSAILEC multicircuit plug.
The M20-I-C5A is typically used in electrical measurement, protection, switchgear, substation and industrial control installations requiring a reverse-mounted 20-circuit connection interface.
TE Connectivity / Entrelec ESSAILEC multicircuit products provide specialised connection solutions for measurement, protection and control systems where reliable multi-circuit connectivity, convenient testing access and efficient maintenance are essential.
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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...