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Temperature relay (miniature thermostat) RT-1
 The relay temperature with self-reset RT-1 are intended to operate as built-in elements inside thermal and other annunciators, including combined fire alarms, as well as for operation in electrical products for maintenance of temperature and temperature protection.
• miniature case (the smallest thermal relay in the world) • vultralow time lag • normally closed or normally open contacts • small hysteresis
• high reliability
operating principle
Material with «shape memory», manufactured using special technology, is used as the sensing element in the relay. When the environment temperature increases (up to the relay operation temperature), the sensing element (1) changes its form and affects the contact spring (2) resulting in opening (closure) of contacts. When the environment temperature decreases, relay contacts reset.
overall and mounting dimensions in mm
Lead wire length L, mm | Lug length L1, mm | Total length L2, mm | 10.0±1.0
20.0±1.0 | 25.0
33.5
Lug length may vary within 10.0 to 33.5 mm range as agreed. | Total length L2 is defined as the sum of lead wire length L and lug length L1, reduced by the connection length, which cannot be less than 4.0 mm. |
SPECIFICATIONS
| Rated voltage Current rating Nominal range Tolerance but at least Reset temperature Response time Electrical impedance of the contact circuit at closed contacts during operation in normal climatic conditions Maximum allowable ambient temperature Mass Operation conditions: environment temperature relative humidity atmospheric pressure Average life | 40 V 100 mA plus 30; 40; 50; 60; 62; 65; 70; 80; 90; 100; 110°Ñ ± 2; 3; 5; 10°Ñ (4.5 ± 2.5)°Ñ less than or equal to 3 sec no more than 1.0 Ohm +140°Ñ no more than 0.15 g -50…+125°Ñ up to 98 % at 25°Ñ temperature without moisture condensation (84,0-106,7) kPa 10 years |
electrical switching mode
Current type | Load type | Voltage, V | Current,mA | Number of operating cycles | Mean time befor failure, h | Direct or alternating | Active | from 3 to 30 inclusive | from 0.1 to 30 inclusive | 100 | 200 000 | Active | from 3 to 30 inclusive | from 0.1 to 50 inclusive | 50 000 | 10 000 | Inductive | from 3 to 30 inclusive | from 0.1 to 30 inclusive | 50 000 | 10 000 |
ORDER IDENTIFICATIONS
Types of operational labels depending on actuation temperature
Actuation temperature, °C | 30 | 40 | 50 | 60 | 62 | 65 | 70 | 80 | 90 | Labelcolor | blue | dark-blue | green | black | gray | yellow | red | brown | orange |
Note: Relay versions are not labeled depending on case hermeticity and lead attachment methods.
Types of labels depending on contact type
No white label - contact normally closed
White label – contact normally open
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