TE Connectivity CPT-1 1SNA166646R0500 is a grey ENTRELEC ESSAILEC protective cover designed for voltage test sockets in electrical protection, metering and instrumentation systems.
Why Choose the TE Connectivity CPT-1 ESSAILEC Voltage Protection Cover?
The TE Connectivity CPT-1 1SNA166646R0500 is a dedicated protective cover for ESSAILEC voltage sockets, designed to protect unused test interfaces and provide a neat, secure finish within electrical protection, metering and instrumentation systems. Part of the established TE Connectivity ENTRELEC ESSAILEC measuring and testing range, the CPT-1 is specifically intended as an accessory for voltage test sockets.
By covering the corresponding ESSAILEC voltage socket when a test plug is not installed, the CPT-1 helps protect the connection interface against accidental contact and environmental contamination encountered within electrical panels. Its purpose-designed construction ensures compatibility with the ESSAILEC system while maintaining straightforward access whenever testing or maintenance is required.
The CPT-1 has compact dimensions of approximately 73 mm high × 49 mm wide × 30 mm deep and a net weight of approximately 30 g. Its grey construction identifies it as a voltage protection cover within the ESSAILEC accessory range, making it suitable for switchgear, substations, relay panels and industrial metering assemblies.
Key Advantages
Purpose-designed protective cover for ESSAILEC voltage sockets.
Helps protect unused test socket interfaces against accidental contact and contamination.
Part of the proven TE Connectivity / ENTRELEC ESSAILEC system.
Compact construction for installation within electrical panels and test assemblies.
Easy to remove when access to the corresponding voltage test socket is required.
Key Features
TE Connectivity / ENTRELEC ESSAILEC series.
CPT-1 model designation.
Designed specifically for ESSAILEC voltage sockets.
Grey protective cover.
Accessory for ESSAILEC measuring and testing blocks.
Compact 73 × 49 × 30 mm format.
Lightweight construction at approximately 30 g.
Suitable for protection, metering, instrumentation and electrical test systems.
Reliable Protection for ESSAILEC Voltage Test Interfaces
ESSAILEC measuring and testing blocks provide dedicated interfaces for voltage measurement, monitoring, testing and maintenance within secondary electrical circuits. When these interfaces are not being accessed by a test plug, an appropriate protective cover helps keep the socket protected and clearly identified within the electrical assembly.
The CPT-1 is designed specifically for this purpose within the ESSAILEC voltage range. Its compact format complements compatible sockets without adding unnecessary bulk, making it a practical accessory for maintaining organised and protected test points in switchgear, substations and industrial control panels.
Typical Applications
ESSAILEC voltage test socket protection.
Protection relay and control panels.
Voltage transformer secondary circuit assemblies.
Electrical metering and energy monitoring systems.
Substation protection and instrumentation equipment.
Switchgear and distribution panels.
Industrial electrical testing installations.
Technical Specifications
Manufacturer
TE Connectivity / ENTRELEC
Series
ESSAILEC
Model
CPT-1
Manufacturer part number
1SNA166646R0500
Product type
Voltage socket protective cover
Application
Protection of ESSAILEC voltage sockets
Colour
Grey
Height
73 mm
Width
49 mm
Depth
30 mm
Net weight
approx. 30 g
EAN
3472591666465
Customs tariff number
85389099
Pack quantity
1
Frequently Asked Questions
What is the TE Connectivity CPT-1 1SNA166646R0500 used for?
The CPT-1 is a protective cover for ESSAILEC voltage sockets, helping protect the socket interface when a test plug is not connected.
Which product range does the CPT-1 belong to?
The CPT-1 belongs to the TE Connectivity / ENTRELEC ESSAILEC measuring and testing block accessory range.
What colour is the CPT-1 voltage cover?
The CPT-1 is grey, identifying it as a voltage socket protective cover within the ESSAILEC accessory range.
What are the dimensions of the CPT-1?
The CPT-1 measures approximately 73 mm high × 49 mm wide × 30 mm deep.
Where is the CPT-1 typically used?
It is typically used with compatible ESSAILEC voltage sockets installed in switchgear, protection panels, substations, metering systems and industrial electrical assemblies.
Trusted Protection for Electrical Test Systems
TE Connectivity’s ENTRELEC ESSAILEC accessories complement the modular measuring and testing system, helping maintain organised and protected test interfaces across electrical protection, metering and instrumentation installations.
Manufacturer
TE Connectivity / ENTRELEC
Series
ESSAILEC
Model
CPT-1
Manufacturer part number
1SNA166646R0500
Product type
Voltage socket protective cover
Application
Protection of ESSAILEC voltage sockets
Colour
Grey
Height
73 mm
Width
49 mm
Depth
30 mm
Net weight
approx. 30 g
EAN
3472591666465
Customs tariff number
85389099
Pack quantity
1
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Delivery
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Standard delivery: 2–3 working days
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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...