Circutor M78035 TP10 Split Core Current Transformer 1000/5A, 80x120mm

The Circutor TP10 1000/5 (code M78035) is a single-phase split core measurement current transformer with a 1000/5 A transformation ratio. Its hinged core design allows fitting around live cables or busbars up to 80 × 120 mm without cutting power or dismantling the installation. The unit offers accuracy up to Class 0.5 at 5 VA burden, making it suitable for revenue-grade metering and power monitoring applications.

Technical specifications:

• Model: TP10 1000/5
• Circutor code: M78035
• EAN: 8433059401627
• Transformer type: Split core
• Transformation ratio: 1000/5 A
• System: Single-phase
• Busbar window (flat strip): 80 × 120 mm
• Inner diameter: 80 mm
• Nominal frequency: 50/60 Hz
• Max. operating voltage: 0.72 kV~
• Class 0.5 burden: 5 VA
• Class 1 burden: 9 VA
• Class 3 burden: 20 VA
• Safety factor (SF): 10
• Thermal short-circuit current (Ith): 60 In
• Dynamic current (Idyn): 2.5 Ith
• Insulation voltage between terminals S1-S2: 3 kV
• Protection class: IP 20
• Working temperature: -5 to +40 °C
• Storage temperature: -40 to +85 °C
• Thermal class: Class B (max. +130 °C)
• Enclosure: Plastic, self-extinguishing V0
• Fastening: Wall mounting or DIN rail (via accessory)
• Dimensions (W × H × D): 158 × 51 × 193.8 mm
• Weight: 0.55 kg
• Standards: UNE-EN 61869-1, UNE-EN 61869-2, UL 94

Features and benefits:

• Split core construction allows the transformer to be fitted around a live conductor without cutting power, eliminating downtime during commissioning or system upgrades.
• Wide busbar window of 80 × 120 mm accommodates large cross-sections found in industrial switchgear and medium-to-high current distribution panels.
• Safety lock on the TP-10 model prevents accidental core opening during operation, protecting measurement continuity and personnel safety.
• Sealable secondary terminals and cable fastening accessories are included in the package, enabling anti-tamper sealing and tidy wiring out of the box.
• Self-extinguishing V0 plastic enclosure with IP 20 protection is suited to indoor electrical panels and DIN rail environments.

Applications:

• Retrofitting current measurement to energised busbars in industrial switchgear and LV distribution boards without service interruption.
• Energy metering and power monitoring in installations where the primary conductor cannot be de-energised for CT fitting.
• Providing a standard 5 A secondary signal to energy meters, power analysers, or protection relays.
• Extending or upgrading metering systems in operational facilities where disconnecting the primary bus is not feasible.

Also known as: Circutor TP10 1000/5, TP10 1000/5 M78035, split core current transformer 1000A, busbar CT 1000/5A, M78035 current transformer.