PKZ 840/841

The PKZ 840 and PKZ 841 terminal blocks are single-level, screw‑connection PCB terminals designed for direct solder mounting. The PKZ 840 family uses a 6.35 mm pitch, while the PKZ 841 uses a wider 9.52 mm pitch, offering pole counts ranging typically from 2 up to 16 poles in both lines. They are rated for up to 32 A and 450 V (PKZ 840) or 1000 V (PKZ 841), with impulse voltage withstands of 6 kV and 3.5 kV respectively, suitable for overvoltage category III, contamination degree 3 environments. The terminals support conductor cross‑sections from 0.2–6 mm² (solid or stranded wire, up to 4 mm² with ferrules), stripped length ~7 mm, secured via M3.5 screws torqued to around 0.8 Nm. Housing is polyamide 6.6, UL 94 V‑0 flame class, with CTI of 600, insulation resistance ≥ 10¹³ Ω·cm, glow‑wire rating GWFI 850 °C, GWIT 775 °C, and rated for wave‑soldering at 265 °C for 3–4 seconds. Hardware is brass/steel, and the pin diameter is approx. 1 mm with a drill‑hole of 1.6 mm and pin length of 4.4 mm. Approvals include UL 1059, cUL C22.2 No 158 and VDE DIN EN 60998.

The PKZ series serves in power electronics, industrial automation, control cabinets and equipment assemblies where high-current, high-voltage PCB connections are needed. The screw-connection design enables secure wiring up to AWG 10 (≈ 6 mm²), making them ideal for terminal blocks feeding relays, contactors, power supplies, sensors or control modules. The wider pitch of PKZ 841 supports higher voltages and greater creepage distances, suiting demanding power or utility control installations. Their flame‑resistant housings and robust approvals ensure conformity with safety standards while allowing through-hole soldering on PCBs or wave‑soldered production lines. The wide variety of pole counts allows modular layout flexibility for multiple common potentials or signal busses across circuit board assemblies.