SIR 8 Series

SIR 8 Series

Product catalog summary
Insulation Data:
  • Double or reinforced insulation at 250 VAC with air and creepage distances greater than 8 mm and 10 mm, respectively.
  • Test voltages are 4000 V and 5000 V at 50 Hz for 1 minute.
  • Contact open test voltage is 1500 V at 50 Hz for 1 minute.
  • Creepage resistance is CTI 250, with a pollution degree of 2 and overvoltage category III.
  • Insulation resistance at Up 500 VDC is greater than 100 MΩ.
Additional Data:
  • Mechanical endurance exceeds 10 million operations with a switching frequency of 15 Hz.
  • Response time for all NO contacts closed is typically 15 ms, and drop-out time for NC contacts closed is typically 4 ms.
  • Bounce times are 6 ms for NO contacts and 12 ms for NC contacts.
  • Shock resistance is 16 ms NO > 10g and NC > 6g, while vibration resistance is NO > 8g and NC > 2.5g.
  • Resistance to short circuiting contacts is 1000 A SCPD 10 A gG / gL (pre-fuse).
  • Ambient temperature range is -40°C to +70°C, with a thermal resistance of 40 K/W and a coil temperature limit of 125°C.
  • Weight is approximately 60 g, with any mounting position and a recommended mounting distance of more than 5 mm.
  • Test method is A / group assembly, with type of protection RT II and solder bath temperature of 270°C for 5 seconds.
Tests, Regulations, Standards:
  • Approvals include UL File E188953 Sec. 3.
  • Insulation class is IEC 60664-1 250 VAC, with fire protection requirements UL 94 / V0.
  • Standards include IEC 61810-1 and IEC 61810-3.
Options, Accessories:
  • No options or accessories available.
Product Key:
  • SIR 3 5 2 24VDC with nominal voltage and solder terminals.
  • Number of NC and NO contacts and type designation are specified.
Contact Lifetime and Load:
  • Contact lifetime for NO contacts varies with different voltages and currents.
  • Maximal switching capacity is specified for AC 15 and DC 13, with UL 508 ratings C600 / R300.
  • Maximal contact load at AC 1 with 230 V is detailed for different numbers of contacts.
Load Limit Curve and Excitation Voltage Range:
  • Inductive and resistive load characteristics are provided.
  • Maximal and minimal excitation voltages are specified for different conditions.
Relay Specifications:
  • Print relay with forcibly guided contacts and safe separation between coil and contacts.
  • Contact configurations for different SIR models are listed.
  • Small external dimensions and coil nominal power of 1.3 W with holding power of 0.39 W.
  • Spools for railway applications available on request.
Dimensions and Contact Data:
  • Dimensions are provided in millimeters.
  • Contact material is AgSnO2 with 0.2 µm Au, and contact type is crown contact.
  • Nominal switching power is 250 VAC 10 A AC1 2500 VA, with an electrical lifespan of approximately 100,000 cycles.
  • Switching voltage and current ranges are specified, along with contact transition resistance.
Standard Coils for DC:
  • Nominal voltage, minimum response voltage, dropout voltage, nominal current, and resistance are specified for various voltages.
General Information:
  • Product is part of the SIR 8 Series, manufactured by ELESTA GmbH, Switzerland.
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Catalog excerpts

SIR 8 Series-1

SIR 8 Series Relais Eckdaten Circuit Diagram (relay top view) Contact Lifetime NO Contacts - Printrelais mit zwangsgefuhrten Kontakten - Sichere Trennung zwischen Spule und alien Kontakten (>10 mm) sowie Kontakte hintereinander (>8 mm) und linker Kontaktseite zu rechter Kontaktseite (>10 mm) - IEC 61810-3 Anwendungstyp A - Kontaktbestuckung: SIR262 2 AK / 6 RK SIR352 3 AK / 5 RK SIR442 4 AK / 4 RK SIR532 5 AK / 3 RK SIR622 6 AK / 2 RK SIR712 7 AK / 1 RK - Kleine Aussenabmessungen - Spulennennleistung 1,3 W - Halteleistung 0,39 W - Spulen fur Bahnanwendungen nach EN 50155 auf Anfrage Insulation Data - Double or reinforced insulation at 250 VAC - ■ — ■ - - Air and creepage distance >8 mm - Test voltage4000 V / 50 Hz / 1 min - Double or reinforced insulation at 250 VAC ^■ - Air and creepage distance >10 mm - Test voltage5000 V / 50 Hz / 1 min Test voltage contact open 1 500 V / 50 Hz / 1 min Creepage resistanceCTI 250 Pollution degree 2 Overvoltage categoryIII_ Insulation resistance at Up 500 VDC >100 MQ Maximal switching capacity (DIN EN 60947-5-1, Tab. C2): AC 15: 230 V / 5 A Maximal contact load at AC 1 with 230 V: 2 contacts with 10 A each 3 contacts with 8,4 A each 4 contacts with 7,3 A each 5 contacts with 6,5 A each 6 contacts with 6 A each Load Limit Curve with Direct Current Additional Data Kontakt materialAgSnO2 + 0,2 pm Au KontaktartKronenkontakt Nennschaltleistung250 VAC 10 A AC1 2500 VA Elektr. Lebensdauer AC1(360 S / h)ca.100 000 Einschaltstrom max.25 A fur 20 ms Schaltspannungsbereich5 bis 250 VDC / VAC Schaltstrombereich*10 mA bis 10 A Schaltleistungsbereich*60 mW bis 2 500 W(VA) Kontaktubergangswid. (Neuzustand) <100 mfi / 6 V / 100 mA Mechanical endurance>10 x 106 operations Switching frequency, mechanical 15 Hz Response time (all NO closed)typically 15 ms Drop-out time** (NC closed) typically 4 ms Bounce time of NO contacttypically 6 ms Bounce time of NC contact typically 12 ms Resistance to short circuiting contacts 1000 A SCPD 10 A gG / gL (pre-fuse) Excitation Voltage Range (andere Spannungswerte auf Anfrage) Ambient temperature Thermal Resistance Temperature limit for coil Mounting position Mounting distance Test method Solder bath temperature **without spark suppression Tests, Regulations, Standards Fire protection requirementsUL 94 / V0 Standards IEC 61810-1, IEC 61810-3 1) Max. excitation voltage with contact load: <6 A 2) Min. excitation voltage (guaranteed values) without previous operation Options, Accessories none available Single relay on print, no heat accumulation due to surrounding components with self-heating, duty cycle 100%.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.