• Stable switching point position due to ambient temperature compensation (standard)
• Max. switching capacity 16 A, 400 V
• Operating life at least 250,000 switching cycles for TR and TW
• Control ranges of up to 500 °C are possible
• STB with extensive setting range: 250 K at 250 °∠
• Switching point deviation during the entire operating life of up to ± 5%
Data Sheet 602031
Page 1/10
Brief description
Thermostats control and monitor thermal processes.
The JUMO heatTHERM is available as temperature controller TR, temperature monitor TW (type
602030), safety temperature monitor STW, or safety temperature limiter STB (type 602031).
The panel-mounted thermostat operates according to the fluid expansion principle. The electri-
cal switching element is a snap-action switch.
The panel-mounted thermostat is RoHS-compliant and cadmium-free.
Temperature controller TR /
temperature monitor TW
If the temperature on the temperature probe exceeds the setpoint value, the microswitch is activated by the
transmission mechanics and the electrical circuit is opened or closed. If the temperature falls below the
selected setpoint value (by the amount of the switching differential), the microswitch is reset to its initial position.
Safety temperature monitor
STW
If the temperature on the temperature probe exceeds the setpoint value, the snap-action switch is activated
and the electrical circuit is opened or closed. If the temperature falls below the selected setpoint value (by the
amount of the switching differential), the snap-action switch is reset to its initial position.
If the probe has cooled down to a temperature below approx. -20 °C the electrical circuit opens - however it
closes again when the temperature rises.
If the measuring system is destroyed (i.e. if the expansion fluid emerges) the pressure in the diaphragm drops
and permanently opens the electrical circuit.
Safety temperature limiter
STB with restart lock and
self-monitoring
If the temperature on the temperature probe exceeds the switching point, the snap-action switch is activated,
the electrical circuit is opened, and the snap-action switch is mechanically locked.
The unlocking difference depends on the control range. Precise values can be attained from the respective
device type. They are also available upon request.
If the probe has cooled down to a temperature below approx. -20 °C the electrical circuit opens - however it
closes again when the temperature rises.
If the measuring system is destroyed (i.e. if the expansion fluid emerges) the pressure in the diaphragm drops
and permanently opens the electrical circuit. Unlocking is no longer possible.
Temperature compensation
When the ambient temperature on the switching head and the capillary deviates — from the calibration ambient temperature of +22 °C — a switching point offset occurs. This switching point offset is reduced to a minimum due to the temperature compensation.
CaseSheet steel, galvanized
Protection typeIP 00 according to EN 60529
Switching socketPolyester resin molding compound, black
Max. permissible ambient
temperature
Rated position (NL)Any
WeightApprox. 0.12 kg
Capillary2,000 mm including 460 mm protective tubing as standard, min. bending radius of the capillary 5 mm
Switching capacityOn the N/O contact (contact deck 1-4):
Electrical connectionA 6.3-0.8 according to DIN 46244
Switching reliabilityTo ensure the greatest possible switching reliability, we recommend a minimum load of:
For transport and storage: -40 to +80 °C
In use: Max. +80 °C
Material no. Cu-DHP
On the N/C contact (contact deck 1-2):
AC 400 V +10 %, 16 A, AC 230 V +10 %, 16 (2.5) A, cos ϕ = 1 (0.6), DC 230 V+10 %, 0.25 A
On the signal contact (contact deck 1-4):
AC 400 V +10 %, 6.3 A,
AC 230 V +10 %, 6.3 (2.5) A, cos ϕ =1(0.6),
DC 230 V +10 %, 0.25 A
AC 400 V +10 %, 2 A,
AC 230 V +10 %, 2 (04) A, cos ϕ = 1 (0.6),
DC 230 V +10 %, 0.25 A
Snap-action switch with gold plating - extra code 702: AC / DC 24 V, 0.1 A)
AC / DC = 24 V, 100 mA for silver contacts
AC / DC = 10 V, 5 mA for gold-plated contacts (TZ 702)
Switching functionRated value
Switching differential in %
of the control range span
When the ambient temperature on the switching head and the capillary deviates from the calibration ambient
temperature of +22 °C, a switching point offset of approx. -0.1 K/K occurs.
Switching point accuracySwitching differentialScale beginningUpper third
TR / TW 2.5 %Standard± 6 %± 3 %
7 %Upon request± 8 %± 4 %
STW / STB 7 %Control rangeIn the "first half“In the "second half“
+70 to 130 °C+0/-12 K+0/-5 K
+95 to 120 °C+0/-5 K+0/-5 K
+20 to 150 °C+0/-15 K+0/-10 K
+50 to 300 °C+0/-30 K+0/-15 K
• Operating life at least 250,000
switching cycles
• Switching point deviation (drift)
during the entire operating life
of up to ± 5%
Data Sheet 602031Page 5/10
Part no.TypeControl range °CCapillary mmSwitching differentialProbe ∅ d×L
60003218
+20 to 90
Approx. 2 K6 × 132 mm
60003280+20 to 90Approx. 5 K6 x 79 mm
60003219+0 to 120Approx. 3 K6 x 87 mm
602030/01
2,000
60003220+0 to 200Approx. 5 K6 × 78 mm
60003221+50 to 300Approx. 6 K6 x 66 mm
Type 602030/02
• Temperature monitor
• Compensated ambient
temperature (standard)
• Max. switching capacity 16 A,
400 V
• Operating life at least 250,000
switching cycles
• Switching point deviation (drift)
during the entire operating life
of up to ± 5%
Part no.TypeControl range °CCapillary mmSwitching differentialProbe ∅ d×L
60003222
60003281+20 to 90Approx. 5 K6 x 79 mm
60003223+0 to 120Approx. 3 K6 x 87 mm
60003224+0 to 200Approx. 5 K6 × 78 mm
60003225+50 to 300Approx. 6 K6 x 66 mm
x 20Safety temperature monitor (STW)Permanently set with change-
x 21Safety temperature monitor (STW)Adjustable with changeover
x 80Safety temperature limiter (STB)Permanently set with changeover contact
x 81Safety temperature limiter (STB)Adjustable with changeover
( 3 )Control range / limit value range °CMax. allowable probe temperature °C
x x 000With permanently set switching point
x0260 to +120145
x0280 to +200230
x041+20 to +90115
x064+50 to +300 (temperature probe made of CrNi)345
x 043+20 to +150 (only with extra code 749)180
x 640+50 to +300 (temperature probe made of CrNi,
only with extra code 749)
x 666+95 to +120145
x 671+70 to +130155
Further control ranges / limit value ranges up to 350 °C upon request (up to +500 °C without approval)
over contact
contact
and restart lock
contact and restart lock
345
Max. allowable
probe tempera-
( 4 )Limit value STW/STB permanently set °C
ture °CSwitching point tolerance
x 000With adjustable limit value
x 095+95145+0/-5 K
x 100+100145+0/-5 K
x 110+110145+0/-5 K
Further limit values up to 350 °C upon request (up to +500 °C without approval)
( 5 )Switching differential %
x 00No specifications for STB
x252.5
x x707
( 6 )Capillary length mm
x x 20002,000
x xSpecial length upon request (maximum length 5,000 mm), specifications in plain text - 1,000 mm steps