The ST series is characterized by its space-saving design, generous labeling options and a flexible bridging system. The ST series terminal blocks are made of unbreakable polyamide 6.6 housings and have UL 94 V0 fire resistance.
The ST series uses a compact spring‑cage system that reduces the insertion space while keeping a large wiring area. Features include generous labeling options with ZB standard Zack strips, a plug‑in bridging system for 2‑ to 20‑position bridges, and ground terminal blocks that snap onto the mounting rail.
Technical data for each size (1.5 mm, 2.5 mm, 4 mm, 6 mm, 8 mm, 16 mm) are listed, covering maximum load current, surge voltage, dimensions, insulating material (PA), and UL‑94 VO inflammability class. Accessories such as end covers, insulating sleeves, test adapters and screwdrivers are also provided.
| Maximum load current | 175 A (ST 1,5) |
|---|---|
| Rated surge voltage | 6 kV (contamination class 3) |
| Insulating material | Polyamide 6.6 (PA) |
| Inflammability class | UL 94 VO |
| Dimensions (width / length / end cover width) | 4.2 mm × 48.5 mm × 22 mm (ST 1,5) |
The ST 1,5 terminal block can carry up to 175 A.
The housings are made of unbreakable polyamide 6.6 (PA).
They meet UL 94 VO inflammability class.
Labeling can be done with ZB standard Zack strips, both flat and 10‑section versions, placed in the terminal center or outer marker grooves.