Solid State Equipment NZ

Automatic earthquake gas isolation for commercial buildings, utilities, and infrastructure. NZ-designed and manufactured since 1971. Serving New Zealand and Australia.

MK6

MK6 Earthquake Trigger Recorder — cast aluminium housing with event counter

The MK6 is New Zealand's trusted electronic earthquake trigger recorder — designed and manufactured by Solid State Equipment since 1971. Where passive mechanical seismic valves wait for physical displacement, the MK6 actively monitors ground acceleration around the clock, detecting the early P-waves that precede destructive shaking by precious seconds.

When the pre-set acceleration threshold is crossed, the MK6 fires its output relay within 10 milliseconds — closing gas valves, shutting down machinery, or triggering any connected safety system before the damaging S-waves arrive.

Key Features

  • Electronic sensing — no moving parts to wear, stick, or fail to reset after an event
  • P-wave detection — triggers on the faster pressure waves, seconds before destructive shaking
  • 10 ms response — relay fires within 10 milliseconds of threshold exceedance
  • Field-adjustable sensitivity — 0.012g to 0.200g, set to suit the installation
  • 6-digit event counter — auditable record of every activation: tests, false alarms, and earthquakes
  • AC or DC power — AC version includes NiCad battery backup for up to 24 hours
  • Robust construction — cast aluminium casing, white polyester finish
  • NZ-designed and manufactured — built for the seismic demands of one of the world's most earthquake-prone regions

Applications

  • Commercial & multi-unit residential buildings — automatic gas isolation on earthquake detection
  • Industrial facilities & manufacturing — safe shutdown of boilers, compressors, and process equipment
  • Hospitals, schools & public infrastructure — life-safety compliance in critical buildings
  • Gas distribution & utility networks — protection at pressure reduction stations and substations
  • CNC machinery & high-value equipment — protecting precision equipment from earthquake-generated forces

Specifications

PowerAC: 230 V, 50 Hz (NiCad backup, 24 hr)  |  DC: 24 V DC
Sensitivity0.012 – 0.200g, field-adjustable (5 settings)
Response TimeRelay fires within 10 ms of threshold exceedance
Contact Rating10 A at 230 VAC  |  3 A at 24 V DC
ConstructionCast aluminium, 290 × 220 mm base, 3 kg

Full technical specifications, installation, and wiring details →

Enquire or Request a Quote

The MK6 is available in AC and DC variants. To discuss your installation requirements, request a datasheet, or get a quote, contact us — we're based in New Zealand and serve customers across NZ and Australia.