ZS4-D1 is a double-deck screw clamp terminal block from Studerbeck that can connect conductors up to 4 mm² (CB certified) 12 AWG in just 5.2 mm 0.205 in spacing.
The ZS4-D1 is a double‑deck screw clamp terminal block designed for conductors up to 4 mm². It offers four independent screw clamps, a compact 5.2 mm spacing and is suitable for both rigid and flexible conductors. Ordering details, part numbers and 3D CAD outlines are provided.
The datasheet lists electrical characteristics such as a rated current of 29 A, rated voltage up to 800 V (IEC) and a short‑circuit withstand current of 480 A. Mechanical data include a torque of 0.6 Nm, IP20 protection and polyamide insulation. Environmental tests certify operation from –55 °C to +110 °C and compliance with ATEX, RoHS and other directives. A accessories table shows compatible end stops, jumper bars and tools.
| Rated current | 29 A |
|---|---|
| Rated voltage (IEC) | 800 V |
| Protection class | IP20 |
| Insulating material | Polyamide |
| Flammability rating | UL94 VO |
| Torque for screw clamp | 0.6 Nm (5.31 lb·in) |
| Wire stripping length | > 10 mm |
| Rated cross‑section | 4 mm² (12 AWG) |
| Storage temperature range | -55 °C to +110 °C |
The ZS4‑D1 is rated for a continuous current of 29 A according to IEC 60947‑7‑1.
A torque of 0.6 Nm (approximately 5.31 lb·in) should be applied to the screw clamps.
The terminal block can be stored from –55 °C up to +110 °C.
The insulating material is polyamide.