3VA9988-0AB12 Introduction: Siemens trip alarm switch 3VA series, CO, used in 3VA series circuit breakers
Germany Siemens/Siemens 3VA9988-0AB12 picture display
Model features introduced
Siemens 3VA auxiliary contacts and undervoltage relief
The auxiliary and alarm switches of the 3VA molded box circuit breaker can be installed in all circuit breakers of all sizes up to 630A. All auxiliary and alarm switches are designed to be used as changeover contacts and therefore offer a high degree of flexibility for planning and installation purposes
Auxiliary switch sends molded box circuit breaker main contact position signal (RS874-4534 and 874-4537)Trip alarm switch sends each circuit breaker trip signal, regardless of the trip reason (RS874-4512 and 874-4515)Electrical alarm switch operation (RS874-4519) Short circuit alarm switch signal trips only when opened by short circuit breaker opening when the circuit breaker is opened by ETU (RS874-4528) An undervoltage release trips a molded box circuit breaker when the rated voltage fails or drops to between 70% and 35% of normal (compatible with relevant standards). Units are available with the following range of rated voltages:
The 230V AC (RS874-4525) 24V DC (RS874-4521) STL type parallel trip can be installed to the left accessory mezzanine as an alternative to undervoltage release. Units are available with the following range of 5 voltage ratings:
230V AC (RS874-4540) 24V AC/DC (RS874-4531)
Siemens3VAMCCB and accessories
Model parameters are introduced
attribute | numeric value | Attachment type | Changeover contacts | range | Sentron | Used in: | 3VA series circuit breaker | Installation type | DIN rails | Contact configuration | CO | Rated voltage | 690V | Current rating | 6A | size | 7.1x31.4x65.7mm | series | 3VA |
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