See the new “CS7 Product Training Module” This presentation provides an overview of Disc Bimetallic Thermostats, how they operate, and key selection points.
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Technical Data (R53)
| ratings \ control type | R53 | R54 | R55 | ||||
 CS-7S |
CS-17 | B-2 | CH-15 | CH-152-35 | CR71 | ||
| function | automoatic | SOD | automoatic | SOD | manual | ||
| version | normally closed / normally open | nc | nc/no | nc | nc | ||
| VDE | rated current at 250 Vac (cos 0,95) | 10A | 25A | 25A/15A | 15(10) | 10 | 10(8) |
| switching cycles | 100,000 | 100,000 | 1 | 100,000 | 1 | – | |
| temperature range Ta (steps in 5 K) | -20°C…200 °C | 60°C …150°C | -20°C … 200°C | 0°C … 220°C | -20°C … 200 °C | ||
| UL | rated current at 250 Vac (cos 0,95) | * 15A/10A | 25A/25A | 25A | 15/10 | 17A | 15(10) |
| switching cycles | 100,000 | 100,000 | 1 | 100,000 | 1 | – | |
| temperature range Ta ( steps in 5 K ) | -20°C…200 °C | 150°C | 0°C … 200°C | °C …250°C | 0°C … 260°C | 50°C … 200°C | |
| tolerances | > +/- 3°C (+/- 5°C Typical) | ||||||
| contact resistance | < 50 mΩ / >100 mΩ at 500V / 1500V for 1 minute | ||||||
| hysteresis / reset temperature (Rt) | Minimum 10K, Normally 20K ±5K | (Rt) -35°C | 20K ±5K | (Rt) -35°C | – | ||
| degrees of protection provided by enclosures ( EN 60529 ) | IPOO | ||||||
| suitable for use in protection class | I, II | ||||||
| approval | VDE/ENEC | Cert# 40010923 EN 60730-1 / -2-9 / 1-A15 / 1-A16 | |||||
| UL / CUL | UL 873 File E50367 | ||||||
| CSA | C22.2 No.24 File LR85323 | ||||||
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* Additional ratings for CS-7 only: 12VDC 15A / 20,000 switching cyles (Not UL, CSA, VDE) For use as a guideline only. |
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Standard Types
| type | nc | no | code | illustration | drawing dimensions (mm) |
tech description | approvals |
| R53 CD-7S, CD-17, B2 |
2 | 1 | Term = Z1 Ring = D |
 |
Terminals 6.3 x 0.8, 4.8 x 0.5mm Sn or Ni plate, Housing: Thermoset, Cap: SS or Al, Loose Bracket, Terminals Vertical (Z type) |
UL, CSA, VDE | |
| Term = Y1 Ring = D |
 |
Terminals 6.3 x 0.8, 4.8 x 0.5mm Sn or Ni plate, Housing: Thermoset, Cap: SS or Al, Loose Bracket, Terminals Horizontal (Y type) |
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| R55 CD-71 |
2 | – | Ring = D |  |
Terminals 6.3 x 0.8, 4.8 x 0.5mm Sn or Ni plate, Housing: Thermoset, Cap: SS or Al, Loose Bracket, Terminals Horizontal (Y type) |
UL, CUL, VE | |
| R53 CS-17 |
2 | 1 | Ring = L |  |
Terminals 6.3 x 0.8, 4.8 x 0.5 mm Sn or Ni plate, Housing: Thermoset, Cap: SS, Welded Bracket, Terminals Horizontal (Y type) |
||
| R54 CH-15, CH-152-35 |
2 | 1 | Ring = None Term = Y7 |
 |
Terminals 6.3 x 0.8, Steel Ni plate, Housing: Ceramic Thermoset, Cap: Aluminum, Loose Bracket, Terminals Horizontal (Y type) |
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Mounting Rings
| type | code | photo | drawing dimensions (mm) |
tech description | approvals |
| CS-7S, CS-17,B2, CR-71 | Standard D |  |
23.8mm mounting ring, loose or fixed at 45°, 90°, or 135°. | UL, CSA, VDE | |
| M |  |
25mm mounting ring, loose or fixed at 45°, 90°, or 135° | |||
| E |  |
30mm mounting ring, loose. | |||
| CS-7S, B2m CR-71, CS-17 | L |  |
41mm mounting bracket fixed at 45°, 90° or 135°. | UL, CUL | |
| CS-7S, B2, CR-71 | Thru-Hole Mnt. = F |  |
Flange Cap mounting, Stainless Steel fixed at 45°, 90° or 135° | UL, CUL, VE | |
| Exposed Bimetal Thru Hole = FX | Flange Cap mounting, w/exposed bimetal, Stainless Steel fixed at 45°, 90° or 135° | ||||
Terminals
| code | used in type | photo | drawing dimensions (mm) |
tech description | approvals |
| Y1 [STD] Brass Faston Tin Plate .250
Y2 Brass Faston Tin Plate.187 Y3 Brass Faston Nickel Plate .250 Y4 Brass Faston Nickel Plate .187 Y5 Steel Faston Nickel Plate .250 Y6 Steel Nickel Solder Connection Y7 Brass Nickel Solder Connection |
CS-7,CR-71, B2
CS-7,CR-71,B2 CS-7,CR-71,B2 CS-7,CR-71,B2 CS-7,CR-71, B2, CH-15 CS-7,CR-71, B2, CH-15 CS-7,CR-71, B2 |
 |
Horizontal Fastons
6.3mm x 0.8mm 4.8mm x 0.8mm |
UL, CSA, VDE | |
| Z1 [STD] Brass Faston Tin Plate .250
Z2 Brass Faston Tin Plate.187 Z3 Brass Faston Nickel Plate .250 Z4 Brass Faston Nickel Plate .187 Z5 Steel Faston Nickel Plate .250 |
CS-7,CR-71, B2
CS-7,CR-71, B2 CS-7,CR-71, B2 CS-7,CR-71, B2 CH-15 |
 |
Vertical Fastons
6.3mm x 0.8mm4.8mm x 0.8mm |
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Caps
 |
Cap in standard execution, material aluminium (code D) Cap for fixed mounting stainless steel (code F) Exposed bimetal cap (code FX) |
Ordering & Marking Example
| Cantherm Ordering Example [ CS710025Y ] | ||||||
| CS7 | 100 | 2 | 5 | Y | __ | __ |
| Model | Response
Tepreature in †C |
Contact Configuration 1=NO 2=NC |
Tolerance 5 = +/- 5†C |
Terminals Y= .25” QC Horz. Z=.25” QC Vert |
Optional Terminals Y1 & Z1 are standard |
MountingBracket D is Std. |
| Marking |
| CS-7S R100U norm. closed response temperature CS710025Y manufacture code 2250 date of manufacture |