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Indoor Instrument Transformers
Indoor transformers are designed for safe, efficient, and reliable voltage transformation within enclosed or climate-controlled environments.
Spectrum Industrial Products offers a trusted range of indoor transformers, including split core current transformers, designed for safe, efficient, and reliable voltage transformation in enclosed or climate-controlled environments. These transformers are ideal for use in commercial buildings, industrial facilities, control rooms, and other indoor applications where consistent electrical performance and space-efficient design are essential. Our split-core current transformers install without breaking the primary conductor, making them a fast, low-disruption choice for retrofits and panel upgrades. Built with high-quality materials and engineered to meet stringent safety and performance standards, our indoor transformers help step up or step down voltage levels to match your system requirements while ensuring maximum operational safety and reliability.
Available in various ratings and configurations, Spectrum’s indoor transformers provide excellent thermal performance, low noise operation, and long-term durability. Whether you need a solution for power distribution, equipment isolation, or voltage regulation, our transformers deliver dependable performance in even the most demanding indoor conditions. Easy to install and maintain, they are built to integrate seamlessly into existing systems and are backed by Spectrum’s commitment to quality and customer support.
Choose Spectrum Industrial Products for precision-engineered indoor transformers that keep your power systems running efficiently and safely.
12 Inch Rogowski Coil - AC Current Sensor
18 Inch Rogowski Coil - AC Current Sensor
24 Inch Rogowski Coil - AC Current Sensor
36 Inch Rogowski Coil - AC Current Sensor
AC Current Sensor RCT-Series
Model 10 Indoor Current Transformer
Model 100 Current Transformer
Model 10WP Current Transformer
Model 110 Current Transformer
Model 112 Current Transformer
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Model 115 Current Transformer
Model 115MR Current Transformer
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Model 117MR Current Transformer
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Model 135 Current Transformer
Model 135MR Current Transformer
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Model 14 Current Transformer
Model 140 Indoor Current Transformer
Model 140MR Current Transformer
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Model 1A Current Transformer
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Model 200WP Current Transformer
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Model 203MR Current Transformer
Model 204 Current Transformer
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Model 21l Indoor Current Transformer
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Model 296 Current Transformer
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Model 2DARL Current Transformer
Model 2VT460 3 Phase Voltage Transformer
Model 2VT469 3 Phase Voltage Transformer
Model 300 Current Transformer
Model 300I Current Transformer
Model 306MR Current Transformer
Model 307MR Current Transformer
Model 308 Indoor Current Transformer
Model 308MR Current Transformer
Model 309MR Current Transformer
Model 311MR Current Transformer
Model 386 Indoor Current Transformer
Model 386MR Current Transformer
Model 387 Indoor Current Transformer
Model 387MR Current Transformer
Model 388 Indoor Current Transformer
Model 388MR Current Transformer
Model 389 Indoor Current Transformer
Model 389MR Current Transformer
Model 3CPT3-60-15 Medium Voltage Transformer - 15 kVA - 60 kV BIL
Model 3CPT3-60-30 Control Power Transformer - 30 kVA - 60 kV BIL
Model 3CPT3-60-45 Control Power Transformer - 45 kVA - 60 kV BIL
Model 3CPT5-95-15 Medium Voltage Transformer - 15 kVA - 95 kV BIL
Model 3CPT5-95-30 Control Power Transformer - 30 kVA - 95 kV BIL
Model 3CPT5-95-45 Control Power Transformer - 45 kVA - 95 kV BIL
Model 3CPTD3-60-75 Control Power Transformer Medium Voltage - 75 kVA - 60 kV BIL
Model 3CPTD5-95-75 Control Power Transformer Medium Voltage - 75 kVA - 95 kV BIL
Model 3CPTDV3-60-75 Control Power Transformer Medium Voltage - 75 kVA - 60 kV BIL
Model 3CPTDV5-95-75 Control Power Transformer Medium Voltage - 75 kVA - 95 kV BIL
Model 3P1 Current Transformer
Model 3P10 Current Transformer
Model 3P18 Indoor Current Transformer
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Model 3P22 Current Transformer
Model 3P27 Current Transformers
Model 3P28 Current Transformers
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Model 3P93 Current Transformer
Model 3PT3-60 Indoor Current Transformer
Model 3VT468 3 Phase Voltage Transformer
Model 3VT472 3 Phase Voltage Transformer
Model 3VTL460 3 Phase Voltage Transformer
Model 3VTN460 3 Phase Voltage Transformer
Model 450 Voltage Transformer
Model 450I Voltage Transformer
Model 460 Voltage Transformer
Model 460 Voltage Transformer Fused
Model 460I Voltage Transformer
Model 460I Voltage Transformer Fused
Model 465 Voltage Transformer
Model 467 Voltage Transformer
Model 468 Voltage Transformer
Model 475 Voltage Transformer
Model 475I Voltage Transformer
Model 4LSF Split Current Transformer
Model 5 Current Transformer
Model 500 Split Core Current Transformer
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Model 540 Indoor Current Transformer
Model 543 Indoor Current Transformer
Model 548 Indoor Current Transformer
Model 550 Split Core Current Transformer
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Model 5A Transformer
Model 6 Transformer
Model 60 Current Transformer
Model 600 Split Core Current Transformer
Model 601 Split Core Current Transformer
Model 604 High Accuracy Low Ratio Split Core Current Transformer
Model 606 Split Core Current Transformer - Transformers
Model 608 Split Core Current Transformer
Model 61 Current Transformer
Model 610 High Accuracy Split Core Current Transformer
Model 613 Split Core/Clamp On Current Transformer
Model 614 Split Core/Clamp On Current Transformer
Model 615 Split Core/Clamp On Current Transformer
Model 616 Split Core/Clamp On Current Transformer
Model 617 Indoor Current Transformer
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Model 81 Current Transformer
Model 81X Current Transformer
Model A Current Transformer
Model B Current Transformer
Model BCF Split Current Transformer
Model CPT3-60-0.5 Medium Voltage Control Power Transformer - 0.5 kVA - 60 kV BIL
Model CPT3-60-1.0 Medium Voltage Control Power Transformer - 1.0 kVA - 60 kV BIL
Model CPT3-60-1.5 Medium Voltage Control Power Transformer - 1.5 kVA - 60 kV BIL
Model CPT3-60-10 Medium Voltage Control Power Transformer - 10 kVA - 60 kV BIL
Model CPT3-60-15 Medium Voltage Control Power Transformer - 15 kVA - 60 kV BIL
Model CPT3-60-2 Medium Voltage Control Power Transformer - 2 kVA - 60 kV BIL
Model CPT3-60-25 Medium Voltage Control Power Transformer - 25 kVA - 60 kV BIL
Model CPT3-60-3 Medium Voltage Control Power Transformer - 3 kVA - 60 kV BIL
Model CPT3-60-37.5 Medium Voltage Control Power Transformer - 37.5 kVA - 60 kV BIL
Model CPT3-60-5 Medium Voltage Control Power Transformer - 5 kVA - 60 kV BIL
Model CPT5-95-10 Medium Voltage Control Power Transformer - 10 kVA - 95 kV BIL
Model CPT5-95-15 Medium Voltage Control Power Transformer - 15 kVA - 95 kV BIL
Model CPT5-95-5 Medium Voltage Control Power Transformer - 5 kVA - 95 kV BIL
Model CPTD3-60-25 Medium Voltage Control Power Transformer - 25 kVA - 60 kV BIL
Model CPTD3-60-37.5 Medium Voltage Control Power Transformer - 37.5 kVA - 60 kV BIL
Model CPTD3-60-50 Medium Voltage Control Power Transformer - 50 kVA - 60 kV BIL
Model CPTD3-60-75 Medium Voltage Control Power Transformer - 75 kVA - 60 kV BIL
Model CPTD5-95-25 Medium Voltage Control Power Transformer - 25 kVA - 95 kV BIL
Model CPTD5-95-37.5 Medium Voltage Control Power Transformer - 37.5 kVA - 95 kV BIL
Model CPTD5-95-50 Medium Voltage Control Power Transformer - 50 kVA - 95 kV BIL
Model CPTD5-95-75 Medium Voltage Control Power Transformer - 75 kVA - 95 kV BIL
Model CPTD7-150-25 Medium Voltage Control Power Transformer - 25 kVA - 150 kV BIL
Model CPTD7-150-37.5 Medium Voltage Control Power Transformer - 37.5 kVA - 150 kV BIL
Model CPTD7-150-50 Medium Voltage Control Power Transformer - 50 kVA - 150 kV BIL
Model CPTN5-95-25 Medium Voltage Control Power Transformer - 25 kVA - 95 kV BIL
Model CPTN5-95-37.5 Medium Voltage Control Power Transformer - 37.5 kVA - 95 kV BIL
Model CPTS3-60-10 Medium Voltage Control Power Transformer - 10 kVA - 60 kV BIL
Model CPTS3-60-15 Medium Voltage Control Power Transformer - 15 kVA - 60 kV BIL
Model CPTS3-60-5 Medium Voltage Control Power Transformer - 5 kVA - 60 kV BIL
Model CPTS5-95-10 Medium Voltage Control Power Transformer - 10 kVA - 95 kV BIL
Model CPTS5-95-15 Medium Voltage Control Power Transformer - 15 kVA - 95 kV BIL
Model CPTS5-95-5 Medium Voltage Control Power Transformer - 5 kVA - 95 kV BIL
Model CTM-0 Indoor Current Transformer
Model CTM-0-1 Indoor Metering Current Transformer
Model CTM-0C Indoor Current Transformer
Model CTO Medium Voltage Current Transformer
Model CTOR Medium Voltage Current Transformer
Model CTW3-60-T10 Medium Voltage Current Transformer
Model CTW6-125 Medium Voltage Current Transformer
Model CTW7-150 Medium Voltage Current Transformer
Model CTWH3-A-60-T100 Medium Voltage Current Transformer
Model CTWH3-A-60-T90 Medium Voltage Current Transformer
Model CTWH4-75-T100 Medium Voltage Current Transformer
Model CTWH5-A-110-T150 Medium Voltage Current Transformer
Model CTWH5-B-110-T200 Medium Voltage Current Transformer
Model CTWH5-S-110 Medium Voltage Current Transformer
Model CTWH6-125-T200 Medium Voltage Current Transformer
Model CTWH7-150-T200 Medium Voltage Current Transformer
Model IE53J Current Transformer
Model IE53Q Current Transformer
Model IE55E Current Transformer
Model IE63N Current Transformer
Model IE65F Current Transformer
Model IE93L Current Transformer
Model IE93R Current Transformer
Model IE93S Current Transformer
Model IEA5G Current Transformer
Model IEA5Y Current Transformer
Model IEB5D Current Transformer
Model IEB5Z Current Transformer
Model IEC5T Current Transformer
Model IED5T Current Transformer
Model IKU Terminal Block
Model JAB-0C Indoor/Outdoor Current Transformer
Model JAB-0C Multi-Tap Indoor Current Transformer
Model JAB-0CV Indoor Current Transformer
Model JAB-0S RevenueSense
MODEL JAB-0W Encompass
Model JAB-AC Indoor Current Transformer
Model JAD-0C Indoor/Outdoor Current Transformer
Model JAD-0C-S SCADA Ready Outdoor Current Transformer - 600V Class
Model JAD-0S RevenueSense
MODEL JAD-0W Encompass
Model JAD-AC High Accuracy Indoor/Outdoor Current Transformer
Model JAH-0C Indoor Current Transformer
Model JAK-0C Indoor/Outdoor Current Transformer - Primary Bar Type Single Ratio
Model JAK-0C Indoor/Outdoor Current Transformer - Window Type Dual Ratio
Model JAK-0C Indoor/Outdoor Current Transformer - Window Type Single Ratio
Model JAK-0S RevenueSense
Model JAK-0W Encompass
Model JAR-0C 600V Indoor Current Transformer
Model JAS-0C Indoor Current Transformer
Model JCA-0C Indoor Current Transformer
Model JCB-0CC Indoor Current Transformer
Model JCB-3 Indoor Current Transformer - 5kV Class
Model JCB-4 Indoor Current Transformer
Model JCB-5 Indoor Current Transformer
Model JCD-0C Indoor/Outdoor Current Transformer
Model JCD-3 Outdoor Current Transformer - 5kV Class
Model JCD-4 Outdoor Current Transformer - 8.7kV Class
Model JCD-5 Outdoor Current Transformer - 15kV Class
Model JCK-5C Outdoor Current Transformer - 15kV Class
Model JCK-5CER Outdoor Current Transformer - 15kV Class
Model JCM-0C Indoor Current Transformer
Model JCM-2 Indoor Current Transformers
Model JCM-3 Indoor Current Transformers - 5kV Class
Model JCM-4 Indoor Current Transformers
Model JCM-5 Indoor Current Transformers
Model JCP-0C Indoor/Outdoor Current Transformer
Model JCR-0C Indoor/Outdoor Current Transformer
Model JCR-0W Encompass
Model JCS-0 Indoor Current Transformer
Model JCS-0C Indoor/Outdoor Current Transformer
Model JCT-0C Indoor Current Transformer
Model JCT-0S RevenueSense
Model JCT-AC Indoor Current Transformer
Model JCW-0C Indoor/Outdoor Current Transformer
Model JCW-3 Outdoor Current Transformer - 5kV Class
Model JCW-4 Outdoor Current Transformer - 8.7kV Class
Model JCW-5 Outdoor Current Transformer - 15kV Class
Model JE-27C Indoor Voltage Transformer
Model JEV-0C Indoor Voltage Transformer
Model JKC-3 Indoor Current Transformer
Model JKM-2 Indoor Current Transformer
Model JKM-3 Indoor Current Transformer
Model JKM-3C Indoor Current Transformer
Model JKM-4C Indoor Current Transformer
Model JKM-5 Indoor Current Transformer
Model JKM-5A Indoor Current Transformer
Model JKM-5AC Indoor Current Transformer
Model JKM-5C Indoor Current Transformer
Model JKS-5 Indoor Current Transformer
Model JVA-0C Indoor/Outdoor Voltage Transformer
Model JVF-0C Indoor/Outdoor Voltage Transformer
Model JVM-0C Indoor/Outdoor Voltage Transformer
Model JVM-3C Indoor Voltage Transformer
Model JVM-4 Indoor Voltage Transformer
Model JVM-4C Indoor Voltage Transformer
Model JVM-5C Indoor Voltage Transformer
Model MCB
Model MCK
Model PT6-1-125 Medium Voltage Indoor Voltage Transformer
Model PT6-2-125 Medium Voltage Indoor Voltage Transformer
Model PT7-1 Medium Voltage Indoor Voltage Transformer
Model PT7-2 Fused Medium Voltage Indoor Voltage Transformer
Model PT7-2 Medium Voltage Indoor Voltage Transformer
Model PT7-2-150 Indoor Voltage Transformer
Model PTM-O Indoor/Outdoor Voltage Transformer
Model PTW3 Indoor Voltage Transformer
Models 603-500T & 603D-500T Split Core Current Transformer
Models CTW3-60-T50 & CTWH3-60-T50 Medium Voltage Current Transformer
Models CTW5-L-110 & CTWH5-L-110 Medium Voltage Current Transformer
Models PT3-1-45 & PT3-2-45 Medium Voltage Indoor Voltage Transformer
Models PTG3-1-60 & PTG3-2-60 Medium Voltage Indoor Voltage Transformer
Models PTG4 Indoor Voltage Transformer
Models PTG5 Medium Voltage Indoor Voltage Transformer
Models PTG5-2-110 Medium Voltage Indoor Voltage Transformer
TCO SERIES - OUTDOOR SPLIT-CORE CURRENT TRANSFORMERS - 600V Class
Type BO7 Current Transformer Standard Selection
Type HGF3C Ground Fault Current Transformer
Type HGF5C Ground Fault Current Transformer
Type HGF8 Ground Fault Current Transformer
Types VIZ-20 and VIZ-20G Indoor voltage transformers
Why Customers Can Trust Spectrum Industries
Combining industry experience, fast availability, and dependable long-term performance.
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