ABB – 1SNA166743R0600 (TO‑E‑VA) – Flush‑Mount Voltage Test Block Sock

The ABB 1SNA166743R0600 (TO‑E‑VA) is a flush‑mount voltage test block socket from the Essailec series. Designed for DIN‑rail electrical panels and automation systems, it supports ring‑tongue connections and enables safe, make‑before‑break voltage testing without interrupting circuit integrity.

Key Features & Specifications

• Model / P/N: 1SNA166743R0600 (TO‑E‑VA)  

• Function: Voltage test block socket – make‑before‑break design

• Current Rating: 8 A

• Voltage Rating: 400 V  

• Connection Type: Ring‑tongue terminals for secure busbar/mains linking  

• Wire Range: Supports 0.34–10 mm² (flexible) / 0.34–6 mm² (rigid) conductor sizes  

• Mounting Format: Flush DIN‑rail mounting with polycarbonate housing; IP20 rated front

• Dimensions: Approx. 74 mm height × 57 mm depth; width ≈ 7.5 mm per pole

• Material: Grey polycarbonate with silver‑plated conductive parts  

• Contacts: Designed for “make‑before‑break” testing—current remains connected during meter insertion/removal