General Purpose Relay




  • BETA relay has been a relay manufacturer almost 50 years (El relé BETA ha sido un fabricante de relés durante casi 50 años.)
  • BETA relay has worked with world famous brand as their OEM/ ODM over 25 years. (Relé BETA ha trabajado con marca de fama mundial como su OEM / ODM más de 25 años)
  • Our insistence on quality and service has earned beta relay a good reputation among our users and clients.(Nuestra insistencia en la calidad y el servicio ha ganado relé beta de una buena reputación entre nuestros usuarios y clientes.)
  • We are specialized in industrial relay (BTA3, BTA2, BTA5, BTA7), general purpose relay (BLY5, BMY5, BTA6), miniature relay (BLY5, BMY5).Estamos especializados en el relé industrial (BTA3,BTA2, BTA5, BTA7), relé de propósito general (BLY5, BMY5, BTA6), relé miniatura (BLY5, BMY5).
  • See more about BETA relay, please click “ABOUT US”. (Ver más sobre relé BETA, por favor haga clic en "Sobre nosotros".)


  • Plug-in style relay.
  • Quick connect receptacles or direct soldering.
  • Large capacity 30A contact rating.
  • 1X, 1Y, 1Z contact arrangement.
  • BTA5 general-purpose relay are available in a wide choice of AC or DCvoltage with indicator lamp and push to test button.
  • UL E115915


Contact form Plug-in Terminals
假日價Standard With LED With LED and Manual button
平日價SPST-NO 假日價BTA3-1C-B-S-C BTA3-1C-B-S-C-L BTA3-1C-B-S-C-LM
  1. The standard contact material AgCdO can be replaced by AGSNO2 gold flashed by adding a letter B in its product name, ex.BTA2-1C-B-S2-CBlank: AGCDO B: AGSNO2 gold flashed
  2. You can choose terminal style by switching the codes. For instance : BTA2-1C-B-S-C(6.35X0.8) can be changed toBTA2-1C-B-S1-C(4.8X0.8)S: 6.35X0.8 S1: 4.8X0.8 S2: 4.8X0.5 P1: 2.3X0.8 P2: 1.2X0.8 (See Terminal Style figure below)
  3. You can choose cover style by switching the codes. For instance : BTA2-1C-B-S2-C( plain cove) can be changed toBTA2-1C-F-S2-C1(side flange cover)C: plain cover C1: side flange cover C3: top flange cover C4: din rail cover
  4. Description of coil insulation Class:B: insulation temperature 130℃(leave blank behind voltage), F: insulation temperature 155℃(add ”F” behind voltage, refer to above chart)
Poles Front-mounting Socket
平日價1C/2C/3C 假日價BTA3-11A
Note: The socket in the table is used in the 0.5MM thickness of S2 terminal only.


Rated voltage Rated current Coil resistance (Ω) Must operate voltage  Must release voltage  Max. voltage  Power consumption (approx.)
假日價50 Hz 60  Hz % of rated voltage
平日價6V 634 518 4.2 85 30 110 3.0VA
平日價12V 257 204 18
平日價24V 假日價146.8 127.2 72
110V  31.2 27.5 1580
120V  48.4 33.1 1700
 220V 27.5 21.2 5500
平日價240V 14.1 12.6  7200
 6V 166.7 32 80 10 1.2W
 12V 96 120
 24V  51.2 472
平日價48V 26.4 1800
 110V 13.2 10000
120V 13.2 10000
  1. The coil resistance is measured at a coil temperature of 25℃ and 35%-70% of humidity.
  2. The operating parameter is measured at a coil temperature of 25℃ indicated in the percentage of the rated voltages.
  3. The coil rated current is measured as the real current consumption under the rated voltages.
Item 1X/1Y/1Z
房型Resistive load(CosΦ=1) 30A 300VAC, 30A 28VDC, 10A 600VAC
房型Motor 平日價1HP 120VAC, 1-1/2HP 200-600VAC
房型Max. switching voltage 平日價250VAC 250VDC
房型Max. switching current 30A
房型Max. switching power 9000VA 840W
Item All Relays
房型Contact resistance 50mΩ Maximum.
房型Operate time 平日價AC: 30mS Maximum, DC:20mS Maximum
房型Release time 平日價AC: 25mS Maximum, DC: 15mS Maximum
房型Max. operating frequency 平日價Mechanical: 18,000 operations/h
Electrical: 1,800 operations/h (under rated load)
Insulation resistance 1000MΩ Minimum. At 500VDC.
Dielectric strength  Between open contact: 1000 VAC for 1 minute.
Between contact and coil: 1500VAC for 1 minute.
Between live parts and ground: 1500VAC for 1 minute.
Vibration resistance Destruction: 10 to 55 Hz, 0.75-mmsingle amplitude(1.5-mm double amplitude)
Malfunction: 10 to 55 Hz, 0. 5-mmsingle amplitude(1.0-mm double amplitude)
Shock resistance Destruction: 1,000 m/s²(approx. 100G)
Malfunction: 1,00 m/s² (approx. 10G)
房型Endurance 平日價Mechanical: 10,000,000 operations min (at 18,000 operations/h)
Electrical: 100,000 operations min (at 1,800 operations/h under rated load)
Ambient temperature Operating: -30℃ to +50℃(AC); -30℃ to +60℃(DC)
Ambient humidity Operating: 5% to 85%
Weight 87g