Astra Automatyka > Produkty > Sensors and transducers > Thermostats > Single-stage frost protection thermostat FT6960 and FT6961 Honeywell / FEMA
Single-stage frost protection thermostat FT6960 and FT6961 Honeywell / FEMA

FT6960 and FT6961 Honeywell / FEMA are suitable for use as frost-protection thermostats for the protection of downstream air heaters in ventilation and climate control systems. Can also be used to con...

FT6960 and FT6961 Honeywell / FEMA are suitable for use as frost-protection thermostats for the protection of downstream air heaters in ventilation and climate control systems. Can also be used to control electrical heating systems and to switch acoustic or optical alarm signals.


Product comparison
Type Coil length (m) Bulb Reset
FT6960-18 1,8 with bulb manual
FT6960-30 3,0 without bulb
FT6960-60 6,0 without bulb
FT6961-18 1,8 with bulb automatic
FT6961-30 3,0 without bulb
FT6961-60 6,0 without bulb

FEATURES

  • Gas-filled copper sensor element with 1.8 m, 3 m, or 6 m coil length
  • Dust-tight micro switch with switching contacts (heat/cool)
  • Easy installation and wiring
  • Manual reset (FT6960) or automatic reset (FT6961)
  • °C and °F scale

The switching temperature can be set by an adjustment screw on top of the housing. The room temperature at the thermostat body should not drop below the setting point. Recommended mounting position is vertical with cable entry on bottom side. For mounting, use the screws (included in the package). To securely mount and to prevent soiling by drilling waste, the mounting holes are enclosed separately.
When unwinding, the capillary tube must be held by the anti-kink device on the diaphragm pot. Maintain a radius of curvature of at least 20 mm. When inserting the coil through openings in sheet metal housings, provide protection against damage. Use the coil bracket included in the package.

The FT6960 Honeywell / FEMA models are manual reset types. After the tem-perature has dropped below the setpoint, the contact remains open until moved back to its normally-closed position by manually pressing the reset button on the front.

Parameter Value
Switching capacity (Agcontact) 24...250 Vac; 16(8) A
Humidity 10...90% rh, non-condensing
Adjustable temperature range -8...+8°C
Storage temperature -30...+60°C
Operating temperature 20...+55°C
Cooling of capillary coil 30 cm (min.)
Max. overload temperature 150°C (max. 1 hr)
Hysteresis 2 K
Protection type IP65 as per EN60529
Wiring terminals Screw terminals for wires of up to 1.5 mm² cross-section
Housing materials ABS and polycarbonate
Weight 320 g
Dimensions (incl. cable gland) 140 x 62 x 65 mm
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