ZS4-SF1-R series is a screw clamp terminal block with fuse launched by Schneider Electric, which complies with IEC 60947-7-3 standard and has a blown fuse indicator with a leakage current of <0.5 mA to quickly identify the defective circuit.
The ZS4-SF1-R is a screw‑clamp terminal block designed for 4 mm² (10 AWG) conductors with built‑in fuse protection. It complies with IEC 60947‑7‑3 and features a blown‑fuse indicator for quick fault identification.
The datasheet lists electrical ratings such as 250 V (IEC) / 300 V (UL) and 6.3 A rated current, mechanical data including torque values, and extensive environmental test results (IP20, temperature range –55 °C to +110 °C, vibration, humidity, and corrosion). It also details compatible accessories like end stops, protecting covers, and tools.
| Rated voltage (IEC) | 250 V |
|---|---|
| Rated voltage (UL) | 300 V |
| Rated current | 6.3 A |
| Short‑time withstand current (1 s) | 480 A |
| Insulating material | Polyamide |
| IP protection | IP20 |
| Operating temperature range (storage) | -55 °C to +110 °C |
| Torque for screw clamp | 0.1 Nm (0.885 Ib·in) |
The terminal block is rated for 250 V according to IEC 60947‑1 and 300 V according to UL 1059.
It is rated for a continuous current of 6.3 A per IEC 60947‑7‑1.
It complies with IP20, IEC 60068‑2‑2 dry heat, IEC 60068‑2‑30 cyclic damp heat, IEC 60068‑2‑1 cold, and IEC 60068‑2‑6 vibration tests.
Accessories include end stops, end sections, protecting covers, cover kits, tools (PS‑3), markers, and various other parts listed in the accessories table.