Instrument Model

Thermal System

Range

On-off Differential

Contact Current Rating

721

Vapour Filled -
Capillary & Bulb

( -) 25 - (+)35 Deg C
to 230 to 300 Deg C

Fixed

5A / 15A 250V AC

723

Vapour Filled -
Capillary & Bulb

( -)25 - (to35 Deg C
230 to 300 Deg C

Wide band Adjustable

5A / 15A 250V AC

781
(Dual Setpoint)

Vapour Filled -
Capillary & Bulb

( - )25 - (+)35 Deg C
to 230 to 300 Deg C

Independent *

5A / 15A 250V AC

731

Vapour Filled -
Rigid Stem Bulb

( - )25 -(+)35 Deg C
to 100 to 170 Deg C

Fixed

5A / 15A 250V AC

733

Vapour Filled -
Rigid Stem Bulb

( -)25 - (+)35 Deg C
tp 100 to 170 Deg C

Wide band Adjustable

5A / 15A 250V AC

734
(Dual Setpoint)

Vapour Filled -
Rigid Stem Bulb

( - )25 - (+)35 Deg C
to 100 to 170 Deg C

Independent *

5A / 15A 250V AC

741

Liquid Filled
Capillary & bulb

( - )50 - (+)50 Deg C
to 150 to 300 Deg C

Fixed

5A / 15A 250V AC

743

Liquid Filled
Capillary & bulb

( - )50 - (+)50 Deg C
to 150 to 300 Deg C

Adjustable

5A / 15A 250V AC

761

Mercury Filled -
Capillary & Bulb

0 - 300 Deg C
to 150 to 550 Deg C

Fixed

15A 250V AC

763

Mercury Filled -
Capillary & Bulb

0- 300 Deg C
150 to 550 Deg C

Wide band Adjustable

15A 250V AC

771

Gas Filled -
Capillary & Bulb

(-)50 Deg C
to (+)150 Deg C

Fixed

5A / 15A 250V AC

773

Gas Filled -
Capillary & Bulb

(-)50 Deg C
to (+)150 Deg C

Wide band Adjustable

5A / 15A 250V AC

774 (Dual Setpoint)

Gas Filled -
Capillary & Bulb

(-)50 Deg C
to (+)150 Deg C

Independent *

5A / 15A 250V AC

* Independent Hi-Lo switching with Fixed Differential