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Matsuo M2/M3 Precision Thermostats

Larger thermostats with higher switching capacities upto 3A/250VAC or 5A/125VAC. The M2 thermostat has a 10K differential whereas the M3’s reset temperature can be within 3.5K of its set-point.

The M2 has no mounting holes and is significantly smaller than the M3, which also comes with 2 mounting holes on opposing sides of the devices.


  • Switching capacities from: 3A/250VAC or 5A/125VAC.
  • Casing size 45 x 15.5 x 10.8mm
  • Maximum operating voltages: AC250V max., DC48V max.
  • Temperature setting range: -10°C to 110°C
  • Double sealed construction (Improvement in waterproof and impact resistance performance)
Matsuo M2 & M3 Technical Drawings