TE Connectivity DEF-D-VA 1SNA166896R1100 is an orange ESSAILEC half-base mounted trip circuit test block with closed contacts, ring-tongue connections and 8 A 400 V ratings for industrial electrical protection and testing applications.
£138.54
The TE Connectivity DEF-D-VA 1SNA166896R1100 is a professional ESSAILEC® trip circuit test block with closed contacts designed for electrical protection, testing and maintenance applications. Part of the established TE Connectivity Entrelec ESSAILEC range, it provides a dependable interface for trip circuits used within switchgear, protection relay panels and electrical distribution systems.
The DEF-D-VA features a half-base mounting configuration with robust ring-tongue connections. Its closed-contact arrangement maintains electrical continuity during normal operation, while the ESSAILEC architecture provides an organised interface for testing and maintenance procedures within critical protection circuits.
Rated at 8 A and 400 V, the DEF-D-VA provides an impulse withstand voltage of 4 kV and is designed for demanding industrial electrical environments. The orange polycarbonate construction identifies the trip circuit function within the ESSAILEC system, while front protection is rated IP20 without a cover and IP40 with the compatible CPDE-1 cover.
Trip circuits form a critical part of electrical protection systems by carrying commands that operate circuit breakers and other protective devices when abnormal conditions are detected. A dedicated test block provides engineers with an organised interface for checking these circuits during commissioning, maintenance and protection-system testing.
The DEF-D-VA is specifically configured for trip circuit applications within the ESSAILEC system. Its closed contacts, half-base mounting arrangement and ring-tongue connections provide a robust solution for permanent installation, while its orange coding helps engineers distinguish the trip circuit interface from current, voltage and polarity circuits within complex electrical panels.
| Manufacturer | TE Connectivity / Entrelec |
|---|---|
| Series | ESSAILEC® |
| Model | DEF-D-VA |
| Manufacturer part number | 1SNA166896R1100 |
| Product type | Trip circuit test block |
| Application | Trip circuit protection and testing |
| Contact configuration | Closed contacts |
| Rated current | 8 A |
| Rated voltage | 400 V |
| Impulse withstand voltage | 4 kV |
| Pollution degree | 3 |
| Short-circuit withstand | 25 A for 5 s / 800 A for 25 ms |
| Connection type | Ring-tongue |
| Mounting type | Half-base mounting |
| Conductive parts | Silver-plated |
| Housing material | Polycarbonate |
| Colour | Orange |
| Protection rating without cover | IP20 |
| Protection rating with cover | IP40 |
| Compatible cover | CPDE-1 |
| Working temperature | -10 to +55 °C |
| Storage temperature | -25 to +70 °C |
| Weight | approx. 140 g |
| Pack quantity | 1 |
| EAN | 3472591668964 |
The DEF-D-VA is an ESSAILEC trip circuit test block designed for electrical protection, testing and maintenance applications in switchgear, protection relay panels and distribution systems.
The DEF-D-VA uses a closed-contact configuration, maintaining electrical continuity during normal circuit operation.
The 1SNA166896R1100 has a rated current of 8 A, a rated voltage of 400 V and an impulse withstand voltage of 4 kV.
The DEF-D-VA provides IP20 front protection without a cover and IP40 protection when fitted with the compatible cover.
Orange is used as the ESSAILEC identification colour for trip circuits, helping engineers distinguish the trip circuit test interface from other circuit types within an electrical installation.
TE Connectivity Entrelec ESSAILEC test blocks provide specialised interfaces for protection, measurement and testing circuits, helping engineers carry out commissioning and maintenance procedures while maintaining organised, dependable and clearly identified electrical connections.
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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...