RAS
RAS
The safety-limit thermostat with capillary is designed for applications up to 350°C. It is an electro-mechanical safety device that switches off when the cut-out temperature is exceeded and requires manual reset after cooling.
Features
- Fail-safe operation with manual reset.
- Approved to EN 60 730-1 / -2-9 standards.
- Automatic action type: 2.B.J.K.L.
- Time factor of sensing element as per DIN EN 14597.
- Pollution degree: 2.
- RoHS compliant.
Technical Data
- Switching system: Calibrated for ambient 23°C.
- Nominal voltage range: AC 24...400 V.
- Nominal current range: 20 (3.3) A.
- Service life: 500 operations at nominal load.
- Protection against electric shock: Class I equipment.
- Protection standard of housing: IP00 (EN60529).
- Overvoltage category: II.
- Switch system support: Plastic, GWT 850°C.
- Capillary and sensing element: Copper/stainless steel.
- Cut-out temperatures: Up to 350°C.
- Capillary length: 300 ... 3500 mm.
- Diameter of sensing element: 6, 6.5 mm (other sizes on inquiry).
- Max. sensing element temperature: > tmax + 25°C.
- Ambient temperature max: 125°C (T125).
- Storage and transport temperature: -25...+60°C.
- Connection terminals: Screw terminals M4x8, Tab terminals A6.3x0.8, DIN 46 244.
Examples
The document provides examples of cut-out temperatures, calibration tolerances, thermal switching differentials, and maximum sensing element temperatures for different settings (e.g., 110°C, 220°C, 350°C).
Catalog excerpts
Safety-limit thermostatThree pole switch Application safety-limit thermostat with capillary, for applications up to 350°C. Features Electro-mechanical safety limit thermostat, fail-save. If cut-out temperature exceeded, circuit switches to OFF and stays at this position. Manual reset after sensing element has cooled by the switching differential • Approved to EN 60 730-1 / -2-9 • Feateres of automatic action: Type 2.B.J.K.L according to EN 60 730-1 / -2-9 • Time factor of sensing element according to DIN EN 14597 • Degree of pollution: 2 Technical data Switching system: Examples Cut-out temp. [°C] ^RATHGEBER REGELGERATE - UMFORMTECHNIK
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View with tab terminals 0° View with tab terminals 90° Other products RAC Combined three pole control / limit and safety-limit thermostat 88, 716 Single pole control / limit thermostat 89, 710 Single pole safety-limit thermostat ^RATHGEBERREGELGERATE - UMFORMTECHNIK IndustriestralJe 12 • D-35756 Mittenaar-Ballersbach Fon: +49 (0)2772/9662 0 • Fax: +49 (0)2772/9662 10 E-Mail: [email protected] Internet: www.rathgeber-gmbh.de
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