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54A
R E l AY S A N D C O N T A C T O R S
D.C. Power Contactors – Type 1 2 4
Coil Contact Rating-(Amps.) DIMENSIONS
STANCOR Coil Resistance Inductive Load INCHES
PART Duty Terminal Pole Bracket Volt. (Ohms) Contact Volt. Normally Open Normally Closed Case Weight Agency
Sec. NUMBER Cycle Type* Form Style D.C. @ 25˚C Material D.C. Continuous Inrush** Continuous Inrush** L W H (oz.) Certif.
A 124-906 Continuous 3 SPNO Standard 12 13.2 Silver Alloy 12 100 400 - - 3.56 3.13 2.19 16.0 -
124-902 Continuous 4 SPNO Standard 12 13.2 Silver Alloy 12 100 400 - - 3.56 3.13 2.19 16.0 -
124-910 Continuous 6 SPDT Standard 12 13.2 Silver Alloy 12 100 400 50 200 4.69 3.13 2.19 19.0 -
B 124-907 Continuous 3 SPNO Standard 24 53.0 Silver Alloy 24 100 400 - - 3.56 3.13 2.19 16.0 -
124-903 Continuous 4 SPNO Standard 24 53.0 Silver Alloy 24 100 400 - - 3.56 3.13 2.19 16.0 -
124-911 Continuous 6 SPDT Standard 24 53.0 Silver Alloy 24 100 400 50 100 4.69 3.13 2.19 19.0 -
C 124-908 Continuous 3 SPNO Standard 36 120.0 Silver Alloy 36 100 400 - - 3.56 3.13 2.19 16.0 -
124-904 Continuous 4 SPNO Standard 36 120.0 Silver Alloy 36 100 400 - - 3.56 3.13 2.19 16.0 -
124-912 Continuous 6 SPDT Standard 36 120.0 Silver Alloy 36 100 400 50 100 4.69 3.13 2.19 19.0 -
D 124-913 Continuous 4 SPNO Standard 48 213.0 Silver Alloy 36 100 400 - - 3.56 3.13 2.19 16.0 -
Engineering Design Data
Operation in % of Nom. Breakdown Voltages
Coil Rating Coil VoltageRating All Terminals - 60 Hz RMS Contact Material Electrical Life Mechanical Life
Nominal Open Max.
Magnetic Max. Contacts Oper. Oper. Oper.
D.C. Coil Rating Safe Opposite Same To Oper. At Per Oper. At Per Temp.
Type (Watts) Pick-up Operate Polarity Polarity Ground Power Pilot Rated Load Min. No Load Min °F
124 12 75% 110% 500 500 500 Silver Alloy Gold 50,000 2 100,000 6 150
For outline drawings refer to page 55.
Temperature Range
–– -40˚F to 150˚F
Terminations
–– Contacts: 5/16"-24 UNF-2A thread
–– Coil: #10-32 UNF-2A thread
Recommended Mounting
–– Vertical plane with coil terminals up.
* Terminal Type: “3” = Grounded Coil, SPNO
“4” = Isolated Coil, SPNO
“6” = Isolated Coil, SPDT
** Inrush Current: Current applied within the first 1/2 second of contact closure
Hardware Torque Specification
–– Contact Terminal: 60 inch-lbs., max.
–– Coil Terminal: 12-18 inch lbs.
–– Caution: A back-up wrench must be used to hold the bottom
nut stationary
Type 124 Custom Design Capabilities
–– Coil voltages 6 VDC through 48 VDC
–– High vibration
–– Gold plated contacts for pilot duty (low load switching) applications
–– Please complete application data form on page 95 of this section.
Note:
Caution must be used in coil selection for use in 12 volt systems where battery charging may expose coil to continuous,
higher-than-rated voltage. Stancor will not be responsible for consequences of misapplied solenoids.
