General Electric 121AC51B4A Time Overcurrent Relay Pair Vintage Industrial GE

  

Matching pair of vintage General Electric Time Overcurrent Relays model 121AC51B4A used in industrial electrical protection and power distribution systems. These heavy-duty electromechanical relays were commonly installed in utility infrastructure, pump stations, water systems, substations, and industrial feeder protection applications during the mid-20th century.

Featuring exposed analog mechanisms, adjustment dials, original utility/service tags, and classic GE industrial engineering construction. General Electric time overcurrent relay GE 121AC51B4A protective relay industrial electrical relay vintage utility equipment electromechanical relay power distribution relay substation equipment pump feeder relay Kennebec Water industrial control steampunk electrical engineering surplus equipment analog industrial decor. Love the item but not the price? Send an offer - industrial surplus and vintage utility equipment buyers know how difficult matching GE relay sets are becoming to find, especially in clean condition with original tags and intact internals. (2) Matching General Electric Time Overcurrent Relays. These are authentic vintage industrial protective relays used in electrical distribution and feeder protection systems. One relay still retains a handwritten service/application tag referencing "Kennebec Water" and "Pump Feeder, " adding real-world utility provenance and display appeal. The exposed electromechanical internals, analog adjustment mechanisms, copper coil assemblies, and heavy industrial housings give these an incredible Cold War era engineering aesthetic. Both units appear exceptionally clean internally with intact components, adjustment dials, coils, housings, and viewing windows. No obvious burn damage, melted wiring, or major corrosion was observed during visual inspection. One relay still retains its original handwritten industrial/service identification tag referencing "Kennebec Water" and "Pump Feeder, " adding utility provenance and display appeal.

These relays may potentially function properly, however no operational or electrical testing has been performed. The visual appeal on these is exceptional with exposed mechanisms, bakelite style construction, copper coils, industrial dial adjustments, and original utility tags. 4-16 Amp Inverse Time / 20-80 Amp Instantaneous.

Industrial, Utility, Electrical Distribution, Pump Feeder. Electromechanical, Analog Adjustment Dial, Industrial Surplus, Utility Provenance. Industrial, Utility Infrastructure, Engineering, Power Distribution, Steampunk, Cold War Era. Display, Collection, Restoration, Industrial Use.

Vintage GE industrial protection equipment with exposed analog mechanisms has become increasingly desirable among electrical collectors, surplus buyers, utility historians, and steampunk/industrial décor enthusiasts. Matching pairs with intact internals and provenance tags are getting harder to source. These items are heavy industrial electrical components and will require secure protective packaging. 18 - 28 lbs total combined.

Final weight is always updated at the time of packing. 18" x 14" x 12. #GeneralElectric #GERelay #IndustrialSurplus #ProtectiveRelay #TimeOvercurrentRelay #Electromechanical #VintageIndustrial #UtilityEquipment #PowerDistribution #ElectricalEngineering #Steampunk #IndustrialDecor #ColdWarIndustrial #AnalogEngineering #IndustrialControl #Substation #PumpFeeder #IndustrialElectronics #VintageGE #SurplusEquipment. General Electric 121AC51B4A relay, vintage GE protective relay, time overcurrent relay industrial, electromechanical utility relay, analog industrial electrical equipment, Kennebec Water relay, pump feeder relay, substation protection equipment, vintage power distribution relay, industrial surplus electromechanical control. Industrial Core, Steampunk, Cold War Engineering, Analog Technology, Utility Infrastructure, Retro Engineering, Heavy Industrial, Mid Century Industrial, Laboratory Aesthetic, Power Plant Equipment.

Pair of vintage General Electric 121AC51B4A time overcurrent industrial relays with exposed electromechanical internals and utility tags. GE relay, General Electric relay, industrial relay, protective relay, electrical surplus, utility equipment, industrial control equipment, analog relay, electromechanical relay, vintage industrial equipment. General Electric 121AC51B4A time overcurrent relay vintage industrial utility electrical protection equipment electromechanical analog power distribution relay substation pump feeder Kennebec Water industrial surplus steampunk engineering display.