This document describes the features and benefits of ZS4-SF1 screw clamp terminal blocks with 1SNK 161 011 D0201 and 1SNK 161 011 S0201 models, including circuit protection, compliance with IEC 60947-7-3 standard, and compatibility with 5x25 and 5x20 fuse terminal blocks. The terminal blocks have a connecting capacity of 4mm² and a spacing of 8mm.
The ZS4-SF1 is a screw‑clamp terminal block designed for 4 mm² (10 AWG) conductors. It complies with IEC 60947‑7‑3 standards and offers features such as IP20 protection, a 0.6 Nm tightening torque, and optional 3D CAD outline drawings.
The datasheet provides material specifications, electrical ratings, environmental test results, and a list of compatible accessories such as end stops, protecting covers, and tools. It also includes detailed connecting capacities for rigid and flexible conductors, both with and without ferrules.
| Rated voltage | 250 V (IEC 60947‑1) |
|---|---|
| Rated current | 6.3 A (IEC 60947‑7‑1) |
| Short‑time withstand current (1 s) | 480 A |
| IP protection | IP20 (NEMA 7) |
| Insulating material | Polyamide |
| Flammability rating | UL94 VO |
| Wire stripping length | 11 mm (0.433 in) |
| Torque for screw clamp | 0.6 Nm (0.885 lb·in) |
The terminal block is rated for 250 V according to IEC 60947‑1.
It is rated for a continuous current of 6.3 A (IEC 60947‑7‑1).
The device has an IP20 protection rating (NEMA 7).