Frequently asked questions

• How many blocks are in the set?

  20 blocks (10 black + 10 grey), plus 2 parallel connection bars, 2 numbered marker strips, end stoppers, screws and a clear storage box.
• What wire size does it accept?

  Solid conductor 0.2-4.0 mm (24-12 AWG) and flexible 0.2-2.5 mm (24-14 AWG); a bootlace ferrule is recommended for flexible wire.
• What current and voltage does it handle?

  Each block is rated 32A and 250V, with a 4 kV dielectric test voltage, conforming to IEC 60947-7-1:2009.
• Which rail does it mount on?

  On a standard 35 mm DIN rail (iron or aluminium); the blocks snap on directly and can be rearranged, with end stoppers keeping them from sliding.
• Do I need a screwdriver?

  No — wiring uses the lever: lift it, insert the conductor stripped to 10 mm and lower it. The included screws only secure the end stoppers.
• Can I bridge several blocks onto one line?

  Yes, the two parallel connection bars in the set let you tie several positions to the same live or neutral line, handy for panel distribution.
• Does the set have a smart protocol or app?

  No, it is a passive wiring accessory — no radio, protocol or app. It is for clean wire connections next to Sonoff modules in the panel.
• Who should do the installation?

  The in-circuit connection under mains voltage must be done by a licensed electrician; the block itself snaps on and wires without tools.