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LATCHING SWITCH RELAYS
125VDC 250VDC 120VAC 240VAC 480VAC 600VAC 5 3 20 15 7.5 7.5 10 5 30 20 15 7.5 2 1 20 15 10 10 5 2 30 20 10 10 60 60 60 60 60 60 30 30 30 30 30 30 CONTACT CIRCUIT VOLTS SHORT TIME RATING* (AMPS) CONTINUOUS RATING (AMPS) INTERRUPTIVE RATING (AMPS) RESISTIVE SINGLE          DOUBLE CONTACT       CONTACT INDUCTIVE SINGLE          DOUBLE CONTACT       CONTACT Contact Ratings for Series 24 LSR Latching Switch Relay 12VDC 24VDC 48VDC 125VDC 120VAC 240VAC 600VAC 5 5 1 1 10 5 3 5 5 1 1 10 5 1 25 25 25 25 25 25 25 15A 15A 15A 15A 15A 15A 15A CONTACT  CIRCUIT VOLTS SHORT TIME RATING* (AMPS) CONTINUOUS RATING (AMPS) INTERRUPTIVE  RATING (AMPS) RESISTIVE SINGLE CONTACT INDUCTIVE SINGLE CONTACT        Contact Ratings for Series 31 LSR Latching Switch Relay * Short time current is for one minute Contact Charts The contact deck arrangements show construction of the relay and are shown as information for the user. Traditional contact charts are more appropriate, as shown to the right. CONTACTS POS. 1 13 14 11 12 15 16 21 22 25 26 31 1 2 17 18 23 24 27 28 33 2 Contact Ratings The LSR Latching Switch Relay has been tested to many different circuit conditions. The inter- rupting ratings are based on 10,000 operations of life, using suddenly applied and removed rated voltage, with no extensive burning of contacts. Inductive ratings are based on tests using standard inductanceL   = 0.04 for DC and cos q  = 0.4 for AC. The Interrupting Rating col- umn headed "double contacts" means two contacts in series. Short-time and continuous rat- ings are based on temperature rise in contact members and supporting parts not exceeding 50°C above ambient. OPTIONS Low Level Control (Recommended For Use with All Microprocessor-Based Devices) The low level command contacts (S1 and S2) close on an interposing relay coil (k1) and the rotary solenoid coil (LSR) is controlled by the relay contact (K1). S1 and S2 can be LSR contacts rated less than 1ampere. The circuit is interrupted by the internal LSR contacts, so S1 and S2 need to “make” the low level circuit only.   To command the LSR to position 2, S1 is closed momentarily (100 milliseconds minimum). This completes a circuit to the rotary solenoid LSR and the device indexes to position 2 and latches. When this occurs, LSR/1 contact opens, interrupting the LSR solenoid circuit. The LSR solenoid resets itself and awaits the next command. 45 81 82 8 5 8 6 10 77 78 83 84 87 88 Latching Switch Relay Direct Control Circuit using interposing relay (shown in position 1) Direct Control Method The command contacts (S1 and S2) close directly on the full LSR rotary solenoid coil current, so the burden data of this solenoid should be considered in the choice of these control con- tacts. The internal LSR contacts interrupt the solenoid current however, so S1 and S2 need to “make” the circuit only. Latching Switch Relay Low Level Control Circuit using interposing relay (shown in position 1) R