9123 LEACH | Alldatasheet

Document overview

  • Manufacturer or author: MarketingLA
  • PDF pages: 6

Technical content

3 PST/NO, 25 AMP

(714) 736-7598 • leachcorp.com • LINA.CustomerService@LeachCorp.com The technical information provided by Leach International Corporation is to be used as a guide only, and is not meant for publication or as documentation for altering any existing specification. Dimensions are in inches unless otherwise specified. Rev. 7/2019.

  • Balanced armature design
  • Hermetically sealed
  • Contact arrangement 3 PST/NO
  • Qualified to MS24143 MS27997 PRINCIPLE TECHNICAL CHARACTERISTICS
  • Contacts rated at 28 Vdc; 115 Vac, 400 Hz, 1Ø 115/200 Vac, 400 Hz, 3Ø
  • Weight 1.25 lb max
  • Dimensions 3.31in x 3.73in x 2.44in
  • Special units available upon request including models with auxiliary contacts. Application Notes: 101 102 103F 007 CONTACT ELECTRICAL CHARACTERISTICS Contact rating per pole and load type [1] Load current in Amps

28 Vdc 115 Vac

400 Hz 3Ø

60 Hz [5]

440 Vac

DELTA [5] Resistive 25 25 25 15 12.5 Inductive [6] 25 25 25 15 12.5 Motor 25 25 25 7 10 Intermediate current 2.5 2.5 2.5 - -

COIL CHARACTERISTICS (Vdc) GENERAL CHARACTERISTICS Unless otherwise noted, the specified temperature range applies to all relay characteristics. CODE Vdc 115 Vac 60/400 Hz Suppressed Vdc [2] Nominal operating voltage 28 115 28 Maximum operating voltage 29 124 29 Pick-up voltage, max. - Nominal 18 90 18 - High temp test 21 100 21 - Continuous current test 22.5 100 22.5 Drop-out voltage, max. 7 40 7 Coil resistance ohms ±10% at +25° C 50 - 50 Coil current max. mA at +25° C - 200 - Temperature range -70°C to + 125°C Minimum operating cycles (life) at rated load 50,000 Minimum operating cycles (life) at 25% rated load 100,000 Dielectric strength at sea level - Coil to case DC 1,250 Vrms AC 1,500 Vrms - Auxiliary contacts DC 1,250 Vrms AC 1,500 Vrms - All other points DC 1,250 Vrms AC 1,800 Vrms Dielectric strength at altitude 80,000 ft 700 Vrms (Coil 500 Vrms) Insulation resistance (at 500 Vdc) minimum 100 M Ω min Sinusoidal vibration (55-1500 Hz) 15G Shock (6-9 millisecond duration) 50G Maximum contact opening time under shock or vibration 2 ms Operate time at nominal voltage DC 25 ms max AC 30 ms max Release time at nominal voltage DC 10 ms max AC 50 ms max Main contact bounce at nominal voltage 2 ms max [1]

  1. Auxiliary contact rating: Resistive and inductive: (28 Vdc or 115 Vac) 5 Amp Lamp: (28 Vdc or 115 Vac) 1 Amp Bounce at nominal voltage: .004 sec max 2. Coils have back EMF suppression to 42 volts. 3. MS numbers are for reference only. Relays are electrically and mechanically interchangeable except the height is less on the Leach relays similar to MS24143. 4. See the following pages for mounting styles and schematic diagram. 5. Ratings beyond MS requirements. 6. Inductive life is 20 percent of rated resistive load life LEACH PART NO. DESCRIPTION MS NUMBER MOUNTING STYLE [4] SCHEMATIC DIAGRAM [4] 9123-C7C4-002 3 PST/NO, 25 AMP, DC COIL MS27997-D1 1 1 9123-C7D3-002 3 PST/NO, 25 AMP, AC COIL MS27997-A1 1 1 9123-1Z-C7C4-002 3 PST/NO, 25 AMP, DC COIL, AUX CONTACT MS27997-D2 1 2 9123-1Z-C7D3-002 3 PST/NO, 25 AMP, AC COIL, AUX CONTACT MS27997-A2 1 2 9123-8069 3 PST/NO, 25 AMP, DC COIL MS24143-D1 [3] 2 1 9123-8070 3 PST/NO, 25 AMP, AC COIL MS24143-A1 [3] 2 1 9123-8071 3 PST/NO, 25 AMP, DC COIL, AUX CONTACT MS24143-D2 [3] 2 2 9123-8072 3 PST/NO, 25 AMP, AC COIL, AUX CONTACT MS24143-A2 [3] 2 2 9123-10394 3 PST/NO, 25 AMP, DC SUPPRESSED COIL - 1 3 9123-10395

3 PST/NO, 25 AMP, DC

COIL, AUX CONTACT - 1 4 9123-10396 3 PST/NO, 25 AMP, DC SUPPRESSED COIL - 2 3 9123-10397 SUPPRESSED COIL, AUX CONTACT - 2 4 Special models available upon request, please contact factory.

Tolerances, unless otherwise specified, XX ± .03, .XXX ± .01

Tolerances, unless otherwise specified, XX ± .03, .XXX ± .01

TERMINAL BARRIERS (OPTIONAL) Dimensions in inches Tolerances, unless otherwise specified, XX ± .03, .XXX ± .01