1sna166963r0000 – cc-th35-vl-6,6

Why Choose the TE Connectivity CC-TH35-VL-6.6 ESSAILEC Current Test Socket?

The TE Connectivity CC-TH35-VL-6.6 (1SNA166963R0000) is an ENTRELEC ESSAILEC current test socket designed for current transformer secondary circuits used in protection, metering and electrical measurement systems. Its make-before-break ESSAILEC architecture provides a controlled interface for testing protection relays, checking and replacing meters and acquiring measurement data without unnecessarily disturbing permanent installation wiring.

Designed for direct TH35 DIN rail mounting, the CC-TH35-VL-6.6 uses screw-clamp connections accepting rigid conductors from 0.2–6 mm² and flexible conductors from 0.22–4 mm². The socket is rated at 400 V and 15 A, with a 4 kV impulse withstand voltage, making it suitable for demanding industrial and utility protection and measurement installations.

The current-range design uses a polycarbonate body with gold-plated conductive parts and the ESSAILEC green current-circuit identification. The CC-TH35-VL-6.6 is supplied with coding and is compatible with the CPC-1 protective cover and FIC-2/4-DIA4 universal test plug, providing a flexible test interface for commissioning and maintenance engineers.

Key Advantages

• Purpose-designed current test socket for current transformer secondary circuits.
• Make-before-break operation supports safe and controlled testing of compatible current circuits.
• Direct TH35 DIN rail mounting simplifies integration into protection and metering panels.
• 15 A rated current and 400 V rated voltage.
• Screw-clamp termination accepts conductors up to 6 mm².
• Compatible with the FIC-2/4-DIA4 universal test plug for flexible testing arrangements.
• Coding included to help prevent incorrect test connections.
• Provides IP20 protection without a cover and IP40 with the appropriate cover.

Key Features

• TE Connectivity ENTRELEC ESSAILEC series.
• CC-TH35-VL-6.6 current socket.
• TH35 rail mounting.
• Screw-clamp (VL) connection technology.
• Make-before-break current-range contact arrangement.
• Current-range green identification.
• Polycarbonate body.
• Gold-plated conductive parts.
• Compatible with CPC-1 protective cover.
• Compatible with FIC-2/4-DIA4 universal test plug.
• Compatible with prewired ESSAILEC test plugs including COR-C series configurations.

Safe Current Transformer Testing with ESSAILEC

Current transformer secondary circuits require controlled handling during testing because an operating CT secondary should not simply be left open-circuit. The ESSAILEC current range uses a make-before-break contact principle that establishes the required test or short-circuit connection before the normal circuit path is interrupted, supporting safer protection relay and metering maintenance procedures.

The CC-TH35-VL-6.6 combines this ESSAILEC current-testing architecture with convenient TH35 rail mounting and screw-clamp field connections. Used with compatible ESSAILEC plugs and accessories, it provides an organised interface for relay testing, meter calibration or replacement, current measurement and network-analysis data acquisition.

Typical Applications

• Current transformer secondary circuits.
• Protection relay testing and commissioning.
• Electrical energy meter testing and calibration.
• Meter replacement and maintenance.
• Current measurement and monitoring systems.
• Network-analysis data acquisition.
• Substation protection and control panels.
• Industrial and utility switchgear installations.