Bluetooth IoT
24+
Years Industry Expertise
5,700m²
Verified Manufacturing Area
92+
Production & Technical Staff
0.5s
Ultra-Precision Metering Class
Recommended Split Core CT & Precision IoT Control Apparatus
Engineered for seamless retrofitting in congested electrical cabinets without interrupting live service lines. Optimized for Indonesian high-humidity and high-temperature tropical environments.
7-Day Program
TOMZN New Type DIN Rail Single Phase Weekly 7 Days Programmable Digital Timer Switch
Dual Output
TOMZN 1NO 1NC DIN Rail Single Phase Weekly 7 Days Programmable Digital Switch Relay
10-in-1 Relay
TORT7 Series Delay-ON Delay-OFF 10-in-1 Asymmetric Cycler Multi-function Timer Relay
EasyCon App
TOMZN Bluetooth Smart Timer Switch 85-265VAC 10A 30A EasyCon Wall-mounted Controller
High Load 63A
TOMZN TOS7-B Bluetooth Smart Timer Switch 40A 63A DIN Rail Countdown Controller
CTS Class 0.5
CTS Series Snap-On Split Core Current Transformer (50A to 600A Input / 5A or 333mV)
IoT Metering
TOB9e-63M DIN Rail Smart Energy Monitor & Intelligent Circuit Protection Relay
Localized Engineering Applications across the Indonesian Archipelago
Analyzing operating environments from high-humidity manufacturing hubs in West Java to off-grid solar microgrids across Nusa Tenggara and Maluku.
C&I Submetering & Industrial Estates
Within industrial epicenters like Cikarang, Karawang, and MM2100, manufacturing facilities require detailed per-line cost allocation without stopping production lines. Split core current transformers clamp around existing main distribution busbars and cable bundles up to 630A, eliminating production line downtime during power management system retrofits.
PLN On-Grid & Distributed Hybrid Solar PV
Indonesian MEMR (ESDM) regulations dictate zero-export compliance and strict anti-islanding mechanisms for distributed rooftop solar PV arrays. High-linearity split core CTs feed bi-directional current data directly into inverter zero-export limiters and data loggers, preventing surplus solar generation from destabilizing the regional PLN grid feeder line.
Telecom BTS & Remote Island Microgrids
Over 17,000 islands across Indonesia rely heavily on remote Base Transceiver Stations (BTS) and hybrid diesel-solar microgrids. Low secondary output split core CTs (such as 333mV and 5A) interface with IoT telemetry units to monitor diesel generator fuel efficiency, phase imbalance, and peak loads, allowing operators to diagnose power quality issues across remote provinces.
Strategic Market Trends Shaping Current Transformer Procurement in Indonesia (2025–2030)
The Indonesian electrical infrastructure landscape is experiencing structural transformation propelled by the RUPTL (Electricity Supply Business Plan) green energy transition, the construction of the new capital city IKN Nusantara, and the rapid expansion of hyperscale data centers across the Greater Jakarta region. Conventional solid-core current transformers are being rapidly phased out in retrofit installations due to prohibitive shutdown costs and manual copper disconnections.
Key drivers currently transforming Indonesian split core CT procurement standards include:
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High Relative Humidity & Tropical Resistance: Demands for polyurethane vacuum encapsulation and anti-corrosive spring latches that withstand 85% to 95% ambient RH without dielectric degradation or core oxidation.
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Transition to Low-Voltage Milli-Volt (mV) Standards: Rapid adoption of 333mV secondary split core CTs to eliminate the lethal open-circuit high voltage risks associated with traditional 5A secondary current loops.
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Integration with Smart Submeters & SCADA: High-bandwidth frequency response capable of capturing up to the 31st harmonic for ISO 50001 energy audits in manufacturing and data center facilities.
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Strict Compliance with SNI & SPLN Frameworks: Increased tender specifications demanding international IEC 61869-2 compliance, CE marking, and verified origin factory certifications for Indonesian government and utility projects.
Engineering Specification Matrix: Split Core CT Performance Criteria
A reference guide for panel builders, electrical contractors, and system integrators specifying sensor classes for Indonesian distribution networks.
| Series Model | Primary Window | Current Range | Secondary Output | Accuracy Class | Primary Indonesian Application |
|---|---|---|---|---|---|
| TMB-CTS10 | Ø 10 mm | 5A – 60A | 0.333V AC / 5A | Class 0.5 | Branch circuit monitoring, residential solar export limiting, IoT smart switches. |
| TMB-CTS16 | Ø 16 mm | 50A – 120A | 0.333V AC / 1A / 5A | Class 0.5s | Commercial sub-metering, retail mall multi-tenant metering boards. |
| TMB-CTS24 | Ø 24 mm | 100A – 250A | 5A / 1A / 333mV | Class 0.5 | Industrial workshop distribution boards, HVAC central chiller monitoring. |
| TMB-CTS36 | Ø 36 mm | 200A – 600A | 5A / 1A | Class 0.5 / 1.0 | Main incomer cabinets, utility backup diesel generators, C&I solar combiners. |
| TMB-CTS50B | 50 × 80 mm (Busbar) | 400A – 1500A | 5A / 1A | Class 0.5s | Factory main low-voltage switchboards (LVMDP), transformer secondary feeds. |
Direct-From-Manufacturer Authority & Industrial Supply Stability
Headquartered in Huabei Village, Liushi Town, Wenzhou—China’s low-voltage electrical capital—Zhejiang TMB Electric Co., Ltd. delivers direct factory engineering, rigorous batch consistency, and agile OEM customization to the Indonesian archipelago.
- 24-Year Track Record: On-site verified facility spanning 5,700 m² with over 90 skilled electrical fabrication personnel.
- TÜV Rheinland Assessed: Complete supplier validation ensuring structural traceabilities, quality management systems, and ISO-grade production lines.
- End-to-End System Integration: Full portfolio compatibility matching Split Core CTs with our CE-certified ATS switches, DC circuit breakers, and PV combiner boxes.
- Low Barrier Sample Policy: Trial quantities starting from 5 pieces to support engineering validation, pilot testing, and tender bench trials.
Frequently Asked Questions by Indonesian Procurement Engineers
Real-world technical and logistical clarifications addressing importer requirements, compliance mandates, and installation challenges in Indonesia.
How do split core CTs withstand Indonesia's high tropical humidity and heat?
Our split core current transformers are constructed using high-grade silicon steel cores encapsulated in vacuum-injected, UL94-V0 flame-retardant epoxy resin. The exterior casing features non-hygroscopic polybutylene terephthalate (PBT) that prevents moisture ingress, corrosion of internal contact surfaces, and core oxidation, ensuring long-term insulation resistance exceeding 100MΩ even in humid tropical conditions up to 95% RH.
What is the advantage of specifying 333mV output split core CTs over traditional 5A secondary types?
Traditional 5A current transformers present severe electrical arc and shock hazards if the secondary circuit is accidentally opened while primary current is flowing, inducing lethal high voltages. In contrast, 333mV milli-volt split core CTs integrate internal burden shunts and clamping diodes, limiting output voltage to intrinsically safe levels. Furthermore, milli-volt signals minimize line losses over long wiring distances to modern digital multi-channel energy meters.
What documentation is supplied for Indonesian import customs clearance and SNI/PLN tender requirements?
For every export shipment directed to ports such as Tanjung Priok (Jakarta) or Tanjung Perak (Surabaya), we provide complete export clearance documentation, including Certificate of Origin (Form E for ASEAN-China preferential tariffs), CE declaration of conformity, RoHS testing reports, IEC 61869 test certificates, and full factory calibration data sheets per serial batch.
Can your split core CTs be directly integrated into existing solar zero-export systems?
Yes. Our CTS line is engineered to match the input impedance and sampling frequency of global and regional hybrid solar inverters (e.g., Huawei, Sungrow, Growatt, Solis, and Deye). They provide phase-angle error correction and low phase displacement (<1 degree), allowing zero-export controllers to adjust solar output within milliseconds to comply with PLN grid anti-export mandates.
What is the minimum order quantity (MOQ) and production lead time for customized CT parameters?
We maintain a low MOQ threshold of 5 pieces for standard catalog configurations to enable straightforward testing and qualification. For custom OEM ratios, customized secondary leads, extended cabling, or specific mounting clips, batch production runs generally ship within 10 to 15 business days directly from our Wenzhou manufacturing complex.
Optimize Your Indonesian Switchgear & Metering Projects
Consult with our engineering team to review single-line diagrams, select accurate transformer primary-to-secondary ratios, or configure customized OEM enclosures and switchgear devices.
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