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

NOTES
[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.
Date of issue: 01/07 - 3 - Page 3 of 5