1sna166644r0300 – fit-2/1-2

Why Choose the TE Connectivity FIT-2/1-2 ESSAILEC Voltage Plug?

The TE Connectivity FIT-2/1-2 1SNA166644R0300 is a compact two-pole voltage test plug designed for use with compatible ESSAILEC measuring and testing blocks. Part of the established TE Connectivity ENTRELEC ESSAILEC range, it provides a convenient interface for accessing voltage circuits during electrical measurement, testing, commissioning and maintenance operations.

The FIT-2/1-2 features a red housing and provides two 4 mm test outlets positioned on the left, enabling suitable test equipment to be connected to the voltage circuit. Its dedicated ESSAILEC format helps engineers perform testing operations through the installed test system without unnecessary disturbance to permanent panel wiring.

With compact dimensions of approximately 51 × 8.8 × 65 mm (H × W × D) and a net weight of approximately 23 g, the FIT-2/1-2 is easy to handle and store as part of an electrical test kit. It is suited to industrial switchboards, protection systems, metering installations and other applications using ESSAILEC voltage test connections.

Key Advantages

• Purpose-designed ESSAILEC voltage test plug.
• Two-pole configuration for voltage testing applications.
• Provides two 4 mm test outlets for compatible test leads and instruments.
• Red housing provides clear visual identification.
• Compact construction simplifies handling during testing and maintenance.
• Designed for integration with the proven TE Connectivity ENTRELEC ESSAILEC measuring and testing system.

Key Features

• TE Connectivity ENTRELEC FIT-2/1-2 voltage plug.
• Part of the ESSAILEC measuring and testing range.
• Two-pole configuration.
• Red housing.
• Two 4 mm outlets positioned on the left.
• Designed for electrical voltage testing and measurement.
• Compact 8.8 mm width.
• Approximately 23 g net weight.
• Suitable for professional industrial testing and maintenance operations.

Reliable Voltage Testing for Electrical Installations

ESSAILEC measuring and testing blocks provide dedicated connection points for testing secondary electrical circuits used with metering, monitoring and protection equipment. Compatible voltage plugs allow technicians to connect measuring instruments through the test interface, helping simplify commissioning, troubleshooting and routine maintenance procedures.

The FIT-2/1-2 provides a compact two-pole interface with standard 4 mm test connections, making it suitable for professional test leads and measuring equipment. Its dedicated ESSAILEC construction supports consistent connection to compatible test-block systems used throughout industrial and power-distribution installations.

Typical Applications

• ESSAILEC voltage measuring and testing systems.
• Electrical metering circuits.
• Protection relay testing and commissioning.
• Voltage transformer secondary circuits.
• Industrial switchboards and control panels.
• Power distribution and substation equipment.