Circutor M78038 TP10 Split Core Current Transformer 1500/5A, 80x120mm

The Circutor TP10 1500/5 (code M78038) is a split core measurement current transformer with a 1500/5 A transformation ratio and an 80 × 120 mm flat strip aperture. Designed for single-phase current measurement on both cables and busbars, it can be fitted around live conductors without disconnecting the supply, making retrofit installation straightforward.

Technical specifications:

• Model: TP10 1500/5
• Circutor code: M78038
• EAN: 8433059401658
• Transformer type: Split core
• System: Single-phase
• Measurement range: 1500/5 A
• Flat strip aperture: 80 × 120 mm
• Inner diameter: 80 mm
• Class 0.5 power: 8 VA
• Class 1 power: 17 VA
• Class 3 power: 30 VA
• Safety factor (SF): 10
• Insulation voltage between terminals S1-S2: 3 kV
• Operating voltage: 0.72 kV~ max.
• Nominal frequency: 50/60 Hz
• Thermal short-circuit current (Ith): 60 In
• Dynamic current (Idyn): 2.5 Ith
• Housing dimensions: 158 × 51 × 193.8 mm
• Enclosure material: V0 self-extinguishing plastic
• Protection class: IP 20
• Thermal class: Class B (+130 °C)
• Working temperature: -5 to +40 °C
• Storage temperature: -40 to +85 °C
• Relative humidity: 15 to 85% (non-condensing)
• Weight: 0.55 kg
• Mounting: Wall or DIN rail (accessory required)
• Maximum installation altitude: 1000 m
• Standards: UNE-EN 61869-1, UNE-EN 61869-2, UL 94

Features and benefits:

• Split core construction allows installation around energised conductors without shutting down the circuit, eliminating costly outages during metering upgrades.
• Accepts flat busbars up to 80 × 120 mm, covering a wide range of high-current switchboard configurations.
• Integrated safety lock on the TP-10 model prevents the core from opening unintentionally once closed around the conductor.
• Sealable secondary terminals and cable fastening accessories are included as standard, supporting tamper-evident revenue metering setups.
• V0 self-extinguishing plastic housing meets fire-resistance requirements for installation inside electrical enclosures.

Applications:

• Retrofit energy metering and submetering in industrial or commercial facilities where interrupting the power supply is not an option.
• Current input for protection relays and measuring instruments in LV switchboards carrying large busbar sections up to 80 × 120 mm.
• Revenue-grade billing metering at Class 0.5 accuracy for energy management systems requiring traceable measurement.
• Monitoring of high-current feeders up to 1500 A in manufacturing plants, data centres, or utility distribution panels.

Also known as: Circutor TP10 1500/5, TP10 1500/5 M78038, split core current transformer 1500A, Circutor M78038, split core CT 80x120mm.