ATH JUMOUKLTD | Alldatasheet
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JUMO GmbH & Co. KG Delivery address:Mackenrodtstraße 14,
36039 Fulda, Germany
Postal address: 36035 Fulda, Germany Phone: +49 661 6003-0 Fax: +49 661 6003-607 E-mail: mail@jumo.net Internet: www.jumo.net JUMO Instrument Co. Ltd. JUMO House Temple Bank, Riverway Harlow, Essex CM 20 2TT, UK Phone: +44 1279 635533 Fax: +44 1279 635262 E-mail: sales@jumo.co.uk Internet: www.jumo.co.uk JUMO PROCESS CONTROL INC.
885 Fox Chase, Suite 103
Coatesville PA 19320, USA Phone: 610-380-8002 1-800-554-JUMO Fax: 610-380-8009 E-mail: info@JumoUSA.com Internet: www.JumoUSA.com Surface-mounting thermostats Series ATH Series IP54 Brief description Thermostats control and monitor thermal processes. Thermostats in the ATH series can be supplied as temperature controllers TR, temperature monitors TW, temperature limit- ers TB, safety temperature monitors STW (S TB) and safety temperature limiters STB. In fault condition, the STB sets the system being monitored to a safe operational state. Surface-mounting thermostats operate on the pr inciple of liquid expansion, with a mi- croswitch serving as the electrical switching device. Switching function Temperature controller TR and temperature monitor TW When the temperature at the probe exceeds the set limit, the microswitch is operated through the mechanism and the circuit is opened or closed. When the temperature has fallen below the set limit (by the switching differential), the microswitch returns to its initial position. Lock-out facility on the temperature limiter TB and safety temperature limiter STB When the temperature at the probe exceeds the set limit, the circuit is opened and the mi- croswitch is locked out mechanically. After the temperature has dropped below the safe temperature limit by about 10 % of span (about 15% for limit setting >+ 350°C), the microswitch can be reset manually. Use of the safety temperature monitor STW as safety temperature limiter STB In this case, the circuit connected to the thermostat must comply with DIN 3440 and with Section 8.7 of DIN/VDE 0116. Self-monitoring on the safety temperature limiter STB and safety temperature monitor STW (STB) In the case of the STB and STW (STB), failure of the measuring system, i.e. a leakage of the expansion fluid, will cause the pressure under the diaphragm to drop, thus permanent- ly opening the circuit. A reset is now impossible. If the temperature at the probe cools down to below -20°C, the circuit will also be opened. As the temperature rises to above -20°C, the STB has to be reset manually, by pressing the reset button. On the STW (STB), the reset is performed automatically. Data Sheet 60.3021 10.03/00073225 ATHs-1 ATHf-70/g Types and approvals Types Switching function DIN Reg. No. Tests You will find the Declarations of Conformity on the In- ternet at: www.jumo.net ➾ Products ➾ Thermostats ➾ Data Sheet 60.3021 or they can be sent to you on request. with rigid stem with capillary - DIN 3440 - Pressure Equipment Directive 97/23/EC (ATH.-20 and ATH.-70 only) ATHs-10 ATHf-10 TR TR 89 101 ATHs-20 ATHf-20 TW TW 89 201 ATHs-70 ATHf-70 TB TB 89 301 ATHs-20 ATH f-20 STW (STB) STW (STB) 89 401 S ATHs-70 ATH f-70 STB STB 89 501
M. K. JUCHHEIM GmbH & Co • 36035 Fulda, Germany Data Sheet 60.3021 Page 2/10 10.03/00073225 Technical data Control ranges and temperature probes Capillaries and temperature probes liquid-filled Type Control / limit ranges in °C Max. permissible probe temperature in °C Maximum capillary length in mm Probe length “L” in mm probe dia. “d” in mm, dia. 6 is standard ATH.-1 ATH.-2 ATH.-7 -50 to +030 -20 to +050 -10 to +040 +00t o+ 050 +00t o+ 070 +00t o+ 1 0 0 +20 to +090 +30 to +110 +20 to +120 +60 to +130 +20 to +150 +50 to +200 +50 to +250 +50 to +300 +50 to +350 050 060 050 060 080 125 115 135 140 150 175 230 290 345 405 5000 128 141 185 185 138 107 138 125 106 135 088 101 073 063 053 085 092 115 115 091 075 091 084 075 090 065 072 054 049 - - - ATH.-20 ATH.-70 +30 to +110 +60 to +130 +20 to +150 +50 to +250 +50 to +300 135 150 175 290 345 5000 108 116 077 064 055 075 079 060 049 - - - gas-filled ATH.-1 ATH.-2 ATH.-7 +20 to +400 +20 to +500 +20 to +500 460 550 550 1000 2000 4000 278 148 202 158 092 119 ATH.-20 ATH.-70 +20 to +400 +20 to +500 +20 to +500 460 550 550 1000 2000 4000 176 127 202 106 081 119 Type End of scale Capillary Temperature probe Note ATH.- . . up to 200°C copper (Cu) 1.5mm dia. Mat. Ref. 2.0090 copper (Cu) Mat. Ref. 2.0090 brazed up to 350°C copper (Cu) 1.5mm dia. Mat. Ref. 2.0090 stainless steel (CrNi) Mat. Ref. 1.4571 brazed up to 500°C stainless steel (CrNi) 1.5mm dia. Mat. Ref. 1.4571 stainless steel (CrNi) Mat. Ref. 1.4571 welded up to 350°C stainless steel (CrNi) 1.5mm Mat. Ref. 1.4571 stainless steel (CrNi) Mat. Ref. 1.4571 welded at extra charge Capillary length standard is: 1000 mm, max. 5000 mm Min. bending radius of capillary 5m m
M. K. JUCHHEIM GmbH & Co 36035 Fulda, Germany Data Sheet 60.3021 Page 3/10 10.03/00073225 Electrical data Operating data Switching device ATH.-1 ATH.-2 ATH.-20 ATH.-7 ATH.-70 ATH.-7/U ATH.-70/U microswitch with changeover contact microswitch with break contact and lock-out microswitch with break contact, lock-out and additional signal contact Max. rating 10 (2) A, 230 V AC +10%, p.f. = 1 (0.6) 0.25A, 230 V DC +10% with differential 1.5% und 2% microswitch gold-plated, code /au
0.1 A, 24 V AC / DC +10%,
contact resistance 2.5 — 10 m Ω Switching differential in % of control / limit range Switching function liquid-filled measuring system Nominal value Possible actual value TR, TW 33 m a x . 4 s t a n d a r d 66 m a x . 8 o n r e q u e s t 1.5 1 max. 2 at extra charge gas-filled measuring system 54 m a x . 8 s t a n d a r d 98 m a x . 1 2 o n r e q u e s t 2 1.5 max. 2.5 at extra charge liquid-filled measuring system STW (STB) 54 m a x . 6 s t a n d a r d 98 m a x . 1 1 o n r e q u e s t 2 1 max. 3 at extra charge gas-filled measuring system 75 m a x . 1 2 s t a n d a r d 98 m a x . 1 6 o n r e q u e s t 2 1.5 max. 3 at extra charge Switching point accuracy in % of control / limit range TR: in upper third of scale ± 1.5%, at start of scale ± 6% TW, TB, STB, STW (STB): in upper third of scale +0/-5%, at start of scale +0/-10% Ambient temperature error referred to control / limit range A deviation of the ambient temperature at the case from the 22° calibration ambient temperature produces a shift in the switching point: higher ambient temperature = lower switching point lower ambient temperature = higher switching point Surface-mounting thermostats with end-of-scale value TR / TW / TB STB/STW (STB) TR / TW / TB STB/STW (STB) TR / TW / TB STB/STW (STB) due to thermostat head due to capillary per meter length Permissible storage temperature -50 to +50°C Permissible ambient temperature in operation +80°C max. Nominal position (NL) to DIN 16 257, NL 0 — NL 90 (other NL on request)
M. K. JUCHHEIM GmbH & Co 36035 Fulda, Germany Data Sheet 60.3021 Page 4/10 10.03/00073225 Case Process connection* *other process connections and pockets, see Data Sheet 60.6710. Note: Physical and toxicological properties of the expansion media which may escape in the event of a system fracture. 1) At present there is no restrictive statement from th e health authorities concerning any danger to health over short periods and at low concentrations, for example after a fracture of the measuring system. Standard cover: polycarbonate, impact-resistant base: die-cast aluminium, painted color: pebble gray RAL 7032 color: anthracite gray RAL 7015 Code a cover: die-cast aluminium, painted color: pebble gray RAL 7032 Setpoint adjustment ATH-1: switching point adjustable from the outside by turning the knob ATH-2, ATH-20, ATH-7, ATH-70: switching point adjustable by screwdriver after taking off case cover Protection EN 60 529-IP54 Cable entry as standard: clamping gland M20 x 1.5, for 8 — 10 mm cable diameter Weight approx. 0.5 kg Thermostat mounting, Series ATHf- . . with capillary Standard thread M 18 x 1 with locknut on case spigot, capillary exit at spigot Code r by 2 screws through base of case, capillary exit on side of case, cover and base in plastic b mounting flange in steel, capillary exit at case spigot k wall bracket Series ATHs- with rigid stem End of scale up to 150°C Pocket U End of scale above 150°C Pocket UZ screw-in pocket with screw-in spigot G 1/2 Form A to DIN 3852/2 screw-in pocket with screw-in spigot G 1/2 Form A to DIN 3852/2 and extension, in order not to exceed the max. permissible ambient temperature +80°C at the case Series ATHf- with capillary plain cylindrical probe A (standard) pocket U (on resquet) screw-in pocket with screw-in spigot G 1/2 Form A to DIN 3852/2 and clip with fixing screw for securing the probe Material Pocket U Pocket UZ up to +150°C CuZn (brass) as standard above +150°C St (steel) as standard (CrNi on request) above +150°C St (steel) as standard (CrNi on request) Fitting length S standard lengths: 100, 120, 150, 200 or 300 mm other lengths on request Immersion tube dia. D = 8 mm, D = 10 mm Control range with end of scale Dangerous reactions Fire/explosion hazard Water contamination Toxicological data ignition temperature explosion limit % v/v irritant danger to health toxic < +200°C no + 280°C 1.2 — 7.5 yes yes 1) no ≥ 200°C ≤ +350°C no + 490°C 1 — 3.5 V yes yes 1) no > 350°C ≤ +500°C no no no no no no no Connection diagrams ATH.-1 ATH.-2 ATH.-20 ATH.-7 ATH.-70 ATH.-7/U ATH.-70/U
M. K. JUCHHEIM GmbH & Co 36035 Fulda, Germany Data Sheet 60.3021 Page 5/10 10.03/00073225 Dimensions ATHs-1, with pocket U ATHs-2, ATHs-20 with pocket UZ ATHf-7 ATHf-70, with pocket U SW M20x1.5 6670 G D S hex SW27 M20x1,5 6670 _85 S G1/2 D 27 a/f SW SW24 M20x1.5 G S M18x1 D hex
M. K. JUCHHEIM GmbH & Co 36035 Fulda, Germany Data Sheet 60.3021 Page 6/10 10.03/00073225 ATHf-1/b, with pocket U ATHf-2/r, ATHf-20/r with plain cylindrical probe A, no pocket ATHf-7/k ATHf-70/k, with plain cylindrical probe A, no pocket SW M20x1.5 G S D Ø 6.5 hex Bohrplan M20x1.5 70 45 Ø4.5 d L drilling diagram M20x1.5 d L 6670
M. K. JUCHHEIM GmbH & Co 36035 Fulda, Germany Data Sheet 60.3021 Page 7/10 10.03/00073225 Stock items with rigid stem Temperature controller (TR) (delivery 3 working days after receipt of order) Temperature monitor (TW) (delivery 3 working days after receipt of order) *model is being phased out Sales No. Type Control/limit range °C Differential % Process connection Immersion tube dia. x length mm 60/60001517 ATHs-1 –10 to + 40 3-4 U G 1/2 8x200 60/60000139 ATHs-1 +20t o+ 50 1.5 U G 1/2 15x100 60/60000634 ATHs-1 +20t o+ 50 1.5 U G 1/2 15x100 CrNi 60/60000479 ATHs-1 +20t o+ 50 3-4 U G 1/2 8x200 60/60000170* ATHs-1 +20t o+ 50 3-4 U G 1/2 8x300 60/60000141 ATHs-1 +20 to + 90 6-8 U G 1/2 15x100 60/60000171 ATHs-1 +20 to + 90 3-4 U G 1/2 8x150 60/60000172* ATHs-1 +20 to + 90 3-4 U G 1/2 8x300 60/60000173 ATHs-1 +20 to +100 1.5 U G 1/2 8x120 60/60000332 ATHs-1 +20 to +100 3-4 U G 1/2 8x120 60/60001548 ATHs-1 +20 to +100 3-4 U G 1/2 8x120 CrNi 60/60001125 ATHs-1 +20 to +100 3-4 U G 1/2 8x150 60/60000174 ATHs-1 +20 to +100 1.5 U G 1/2 8x200 60/60001126 ATHs-1 +20 to +100 3-4 U G 1/2 8x200 60/60000175 ATHs-1 +20 to +100 3-4 U G 1/2 8x300 60/60001034 ATHs-1 +20 to +120 3-4 U G 1/2 8x150 60/60000481 ATHs-1 +20 to +150 3-4 U G 1/2 8x100 60/60001547 ATHs-1 +20 to +150 3-4 U G 1/2 8x100 CrNi 60/60001035 ATHs-1 +20 to +150 3-4 U G 1/2 8x200 60/60001127 ATHs-1 +20 to +150 3-4 U G 1/2 8x300 60/60001037 ATHs-1 +50 to +200 3-4 UZ G 1/2 8x200 60/60001036 ATHs-1 +50 to +300 3-4 UZ G 1/2 8x150 60/60002123 ATHs-1 +20 to +500 5 UZ G 1/2 8x200 *model is being phased out Sales No. Type Control/limit range °C Differential % Process connection Immersion tube dia. x length mm 60/60001135 ATHs-2 –10 to + 40 3-4 U G 1/2 8x200 60/60000960 ATHs-2 +20 to + 50 1.5 U G 1/2 15x100 60/60001549 ATHs-2 +20 to + 50 1.5 U G 1/2 15x100 CrNi 60/60001128 ATHs-2 +20 to + 50 3-4 U G 1/2 8x200 60/60000176* ATHs-2 +20 to + 50 3-4 U G 1/2 8x300 60/60000177 ATHs-2 +20 to + 90 1.5 U G 1/2 15x100 60/60000959 ATHs-2 +20 to + 90 6-8 U G 1/2 15x100 60/60001129 ATHs-2 +20 to + 90 3-4 U G 1/2 8x150 60/60000178 ATHs-2 +20 to + 90 3-4 U G 1/2 8x200 60/60000331 ATHs-2 +20 to +100 3-4 U G 1/2 8x120 60/60001552 ATHs-2 +20 to +100 3-4 U G 1/2 8x120 CrNi 60/60000179 ATHs-2 +20 to +100 3-4 U G 1/2 8x150 60/60001039 ATHs-2 +20 to +100 3-4 U G 1/2 8x200 60/60001130 ATHs-2 +20 to +100 3-4 U G 1/2 8x300 60/60001124 ATHs-2 +20 to +150 1.5 U G 1/2 8x100 60/60000483 ATHs-2 +20 to +150 3-4 U G 1/2 8x100 60/60001551 ATHs-2 +20 to +150 3-4 U G 1/2 8x100 CrNi 60/60000485 ATHs-2 +20 to +150 3-4 U G 1/2 8x200 60/60001554 ATHs-2 +20 to +150 3-4 U G 1/2 8x200 CrNi 60/60000182 ATHs-2 +20 to +150 3-4 U G 1/2 8x300 60/60000186 ATHs-2 +50 to +200 3-4 UZ G 1/2 8x120 60/60001131 ATHs-2 +50 to +200 3-4 UZ G 1/2 8x200 60/60000185* ATHs-2 +50 to +200 3-4 UZ G 1/2 8x300 60/60001105 ATHs-2 +50 to +300 3-4 UZ G 1/2 8x150 60/60001556 ATHs-2 +50 to +300 3-4 UZ G 1/2 8x150 CrNi 60/60002124 ATHs-2 +20 to +500 5 UZ G 1/2 8x200
M. K. JUCHHEIM GmbH & Co 36035 Fulda, Germany Data Sheet 60.3021 Page 8/10 10.03/00073225 Stock items with rigid stem Safety temperature monitor STW (STB) (delivery 3 working days after receipt of order) Safety temperature limiter (STB) (delivery 3 working days after receipt of order) Stock items with capillary Temperature controller (TR) (delivery 3 working days after receipt of order) Temperature monitor (TW) (delivery 3 working days after receipt of order) *model is being phased out Sales No. Type Control/limit range °C Differential % Process connection Immersion tube dia. x length mm 60/60001478 ATHs-20 +20 to +150 4-6 U G 1/2 8x150 60/60000188 ATHs-20 +50 to +300 4-6 UZ G 1/2 8x200 60/60002217 ATHs-20 +50 to +350 4-6 EZS G 3/4 170 60/60000885 ATHs-20 +20 to +500 7 UZO G 1/2 200 Sales No. Type Control/limit range °C Differential % Process connection Immersion tube dia. x length mm 60/60000982 ATHs-70 + 30 to +110 —— U G 1/2 8x150 60/60001043 ATHs-70 + 30 to +110 —— U G 1/2 8x200 60/60000189 ATHs-70 + 30 to +110 —— U G 1/2 8x300 60/60001044 ATHs-70 + 60 to +130 —— U G 1/2 8x150 60/60000190 ATHs-70 + 60 to +130 —— U G 1/2 8x200 60/60001020 ATHs-70 + 20 to +150 —— U G 1/2 8x200 60/60000120 ATHs-70 +130 to +200 —— UZ G 1/2 8x150 60/60001042 ATHs-70 +130 to +200 —— UZ G 1/2 8x300 60/60001132 ATHs-70 + 50 to +300 —— UZ G 1/2 8x200 60/60001524 ATHs-70/U + 30 to +110 —— U G 1/2 8x150 60/60001522 ATHs-70/U + 20 to +150 —— U G 1/2 8x200 60/60001523 ATHs-70/U + 50 to +300 —— UZ G 1/2 8x200 60/60002218 ATHs-70/U + 50 to +350 —— EZS G 3/4 170 60/60000884 ATHs-70/U + 20 to +500 —— UZO G 1/2 200 60/60002121 ATHs-70/U + 20 to +500 —— UZ G 1/2 8x200 Sales No. Type Control/limit range °C Differential % Capillary mm Process connection Probe dia. x length mm 60/60001134 ATHf-1 –10 to + 040 3-4 1000 A 6x185 60/60000477 ATHf-1 +20t o+ 050 3-4 1000 A 6x185 60/60001193 ATHf-1 +20 to + 090 3-4 1000 A 6x138 60/60001004 ATHf-1 +20 to +100 3-4 1000 A 6x107 60/60000955 ATHf-1 +20 to +150 3-4 1000 A 6x 88 60/60001133 ATHf-1 +50 to +300 3-4 1000 A 6x 63 60/60002113 ATHf-1 +20 to +500 5 1000 A 6x148 Sales No. Type Control/limit range °C Differential % Capillary mm Process connection Probe dia. x length mm 60/60000482 ATHf-2 +00t o+ 050 3-4 1000 A 6x185 60/60001192 ATHf-2 +00t o+ 050 3-4 2000 A 6x185 60/60000965 ATHf-2 +20 to + 090 3-4 1000 A 6x138 60/60001211* ATHf-2 +20 to + 090 3-4 2000 A 6x138 60/60000962 ATHf-2 +00 to +100 3-4 1000 A 6x107 60/60001212 ATHf-2 +00 to +100 3-4 2000 A 6x107 60/60000963 ATHf-2 +20 to +150 3-4 1000 A 6x 88 60/60001210 ATHf-2 +20 to +150 3-4 2000 A 6x 88 60/60000187 ATHf-2 +50 to +200 3-4 1000 A 6x101 60/60001209 ATHf-2 +50 to +200 3-4 2000 A 6x101 60/60001038 ATHf-2 +50 to +300 3-4 1000 A 6x 63 60/60001208 ATHf-2 +50 to +300 3-4 2000 A 6x 63 60/60002122 ATHf-2 +20 to +500 5 1000 A 6x148 60/60002114 ATHf-2 +20 to +500 5 2000 A 6x148
M. K. JUCHHEIM GmbH & Co 36035 Fulda, Germany Data Sheet 60.3021 Page 9/10 10.03/00073225 Stock items with capillary Safety temperature limiter (STB) (delivery 3 working days after receipt of order) Order details for items not available from stock Series ATH Sales No. Type Control/limit range °C Differential % Capillary mm Process connection Probe dia. x length mm 60/60002261 ATHf-20/r + 20 to +500 7 4000 ES G 3/4 200 60/60001136 ATHf-70 + 30 to +110 —— 1000 A 6x108 60/60001206 ATHf-70 + 30 to +110 —— 2000 A 6x108 60/60001097 ATHf-70 + 60 to +130 —— 1000 A 6x116 60/60001041 ATHf-70 + 20 to +150 —— 1000 A 6x 77 60/60001205 ATHf-70 + 20 to +150 —— 2000 A 6x 77 60/60001525 ATHf-70/U + 20 to +150 —— 1000 A 6x 77 60/60001204 ATHf-70 + 50 to +200 —— 2000 A 6x 85 60/60001290 ATHf-70/U + 50 to +200 —— 1000 A 6x 85 60/60001002 ATHf-70 +130 to +200 —— 1000 A 6x114 60/60001040 ATHf-70 + 50 to +300 —— 1000 A 6x 55 60/60001191 ATHf-70 + 50 to +300 —— 2000 A 6x 55 60/60001528 ATHf-70/U + 50 to +300 —— 1000 A 6x 55 60/60002086 ATHf-70 + 20 to +500 —— 1000 A 6x127 60/60002088 ATHf-70/U + 20 to +500 —— 1000 A 6x127 60/60002099 ATHf-70/U + 20 to +500 —— 2000 A 6x127 60/60002262 ATHf-70/U/r + 20 to +500 —— 4000 ES G 3/4 200 Order code (1) Basic type 603021-1-0001 ATHs-1 Temperature controller with rigid stem 603021-1-0002 ATHs-2 Temperature monitor with rigid stem 603021-1-0007 ATHs-7 Temperature limiter with rigid stem 603021-1-0020 ATHs-20 Safety temperature monitor with rigid stem 603021-1-0070 ATHs-70 Safety temperature limiter with rigid stem 603021-2-0001 ATHf-1 Temperature controller with capillary 603021-2-0002 ATHf-2 Temperature monitor with capillary 603021-2-0007 ATHf-7 Temperature limiter with capillary 603021-2-0020 ATHf-20 Safety temperature monitor with capillary 603021-2-0070 ATHf-70 Safety temperature limiter with capillary (2) Control / limit ranges °C 11 -50 to + 030 14 -20 to + 050 16 -10 to + 040 21 +00t o+ 050 22 +00t o+ 070 25 +00t o+ 1 0 0 41 +20 to + 090 52 +30 to +110 42 +20 to +120 66 +60 to +130 43 +20 to +150 62 +50 to +200 63 +50 to +250 64 +50 to +300 45 +20 to +400 46 +20 to +500 (3) Switching differential 00 no differential (-7 TB / -70 STB) 15 1.5% of scale span (TR + TW only) 20 2% of scale span (STW (STB only)) 30 3% of scale span (TR + TW only) 50 5% of scale span (TR + TW + STW (STB) only) 60 6% of scale span (TR + TW only) 70 7% of scale span (STW (STB) only) 90 9% of scale span (STW (STB) only)
M. K. JUCHHEIM GmbH & Co 36035 Fulda, Germany Data Sheet 60.3021 Page 10/10 10.03/00073225 Series ATH * for other connection types and pockets, see Data Sheet 60.6710. (4) Capillary length
0000 ATH s- no capillary
. . . . (special length, details in plain text) (5) Material of capillary
00 ATH s- no capillary
40 Cu (copper)
20 CrNi (stainless steel 1.4571) (6) Process connection (PA) *
10 A = plain cylindrical probe (ATH f only)
20 U = screw-in pocket
30 UZ = screw-in pocket with extension
(7) Thread for process connection * 00 no thread (process connection A) 13 external thread G 1/2 (8) Material of process connection 00 only with process connection A
46 CuZn (brass)
01 St (steel)
20 CrNi (stainless steel 1.4571) (9) Fitting length S (immersion tube length)
000 ATH f- no pocket
(10) Diameter D (immersion tube dia.)
00 ATH f- no pocket
(11) Diameter d (probe dia.) 66 m m 88 m m (12) Extra codes 000 no extra code
574 U TB / STB with break contact, lock-out and additional signal contact
(-7 TB / -70 STB) 702 au snap-action switch contacts gold-plated 701 a case cover die-cast aluminium (not with extra code r) 711 r thermostat head mounting by 2 screws through base of case, capillary exit on side of case, cover and base in plastic 764 b mounting flange in sheet steel, capillary exit at case spigot 248 k wall bracket Order code Order example 603021-2-0002 / 43 - 30 - 4000 - 20 - 10 - 00 - 00 - 000 - 00 - 6 / 248 / 000 / 000