Megger CB-360-DC circuit breaker tester

Description

Purpose-Built Testing for DC Circuit Breakers

The Megger CB-360-DC Circuit Breaker Tester stands as a specialized, mobile high-current test set specifically engineered for DC circuit breakers. Its robust design incorporates a variable high-current DC output, intelligent control circuitry, and advanced instrumentation, wrapped in a frame built for both mobility and safety. What truly sets this unit apart from generic alternatives is its targeted ability to assess, calibrate, and verify the timing and functionality of low voltage DC breakers, particularly those utilizing electromechanical or thermal-magnetic trip mechanisms. By simulating overload or fault conditions, the CB-360-DC actively ensures the reliability and performance of critical circuit protection assets in industrial, utility, and transportation infrastructures. So, whether for scheduled maintenance, troubleshooting, commissioning, or type-testing, this device provides industry-leading assurance for any facility relying on dependable DC circuit protection.

Versatile Applications Across Industrial Sectors

The applications of the Megger CB-360-DC Circuit Breaker Tester are remarkably far-reaching. Utilities deploy this tester extensively for calibrating and functionally testing protective DC circuit breakers that safeguard substations and power conversion systems. In the transport sector—think not only railways and metros but also metro rolling stock and tramways—it is vital for ensuring the safety and reliability of traction power circuits. Industrial plants employing DC drives, uninterruptible power supplies (UPS), and renewable energy arrays utilize the CB-360-DC during commissioning and periodic testing to confirm circuit breaker integrity and response times in real-world overload or fault events. Its high-amperage capabilities and flexible operation make it equally valuable for manufacturers, maintenance contractors, and third-party testing labs that require a rugged, precise, and easy-to-move solution for routine, benchmark, or forensic investigations of DC protection equipment.

High-Current Performance and Digital Timing Excellence

Central to the success of the CB-360-DC is its industry-leading electrical performance, especially in delivering high, precisely adjustable DC output currents. This tester can provide up to a staggering 30,000 amperes—making it ideal for the rigorous demands of short-time and peak testing scenarios. The built-in solid-state digital timer is elegantly integrated, with a six-digit display clearly showing elapsed test intervals in seconds or cycles. This digital timer employs a crystal-controlled oscillator, ensuring accuracy is completely independent of any possible voltage or frequency fluctuations in the input supply. Its comprehensive shielding and noise-reduction circuits maintain reliability under harsh field conditions. Whether quantifying sub-second trip times or conducting extended current-hold evaluations, the timer and output combination guarantee that users obtain consistent, meaningful, and reproducible results every time.

Simplified Test Modes and Thoughtful Automation

Megger has equipped the CB-360-DC with multiple timer control operating modes to maximize field flexibility and minimize operator error. Testers can select among current-actuated, normally closed, and normally open configurations using simple switch selections on the control panel. For circuit breakers without auxiliary contacts, the “current-actuated” mode automatically stops the timer and power output the moment current flow is interrupted. For breakers with auxiliary trip contacts, users can ensure output de-energizes precisely when the desired state—contact opening or closing—is achieved. Such automation reduces manual intervention, improving both efficiency and accuracy in testing, especially invaluable in settings where multiple device technologies are present. This makes the CB-360-DC exceptionally intuitive and adaptive regardless of the test situation or breaker construction.

Overload Protection and Robust Build Quality

Safety and longevity are at the core of the CB-360-DC’s construction philosophy. The output section of the tester is protected with a suite of overload-prevention measures, including protective circuit breakers, overload relays, and fuses. Forced-air cooling, combined with a temperature-sensitive interlock, ensures the system does not overheat during high-amperage, long-duration tests—automatically de-energizing the unit if abnormal heating is detected. The device is housed in a rugged, two-piece enclosure with a low center of gravity, heavy-duty locking casters, and lifting eye hooks for portability. Such durable design means the test set not only withstands the rigors of field deployment but also offers safe at-height or hard-to-access setups. All these measures together ensure that both operators and equipment benefit from maximum protection.

Complete Instrumentation and Intelligent Output Connections

Instrumentation on the Megger CB-360-DC is designed for both detail and durability. Its calibrated ammeter system provides accurate DC current measurement, offering switch-selected ranges from as low as 500 A up to an eye-watering 50,000 A, with overall accuracy at ±5% of full scale when balanced three-phase input is used. The ammeter features an anti-reflective glass face, mirrored scale, and knife-edge pointer to enable crisp, error-free reading—crucial for short-duration test intervals. The tester’s output connections are equally advanced, utilizing a stab adapter board and universally rated CBS-1 and CBS-2 stab sets, enabling direct connection to a wide array of breaker designs. Users with less common breaker types can refer to the optional CBS-3 stab set list, further expanding the instrument’s reach and compatibility.

tpt24: The Premier Supplier for Global Delivery

When it comes to sourcing the Megger CB-360-DC Circuit Breaker Tester, online platform tpt24 stands unrivaled as the leading global retailer for this instrument. With a commitment to genuine products, tpt24 delivers the CB-360-DC to clients like utility companies, industrial facilities, and testing laboratories in any country—guaranteeing authenticity and full manufacturer’s quality assurance regardless of location. tpt24’s reputation is built on verified supply channels, expertise in international logistics, and a customer service team ready to guide buyers on technical selection and after-sales support. When you choose tpt24, you secure not just the product, but also the peace of mind that comes with global warranty, fast delivery, and expert advice tailored to your testing requirements.

Technical Features, Accessories, and Support

With its dual-section construction, the CB-360-DC test set offers practical dimensions and heavy-duty build. Each section measures approximately 45” x 53-54” x 30” (or 114 x 135 x 76 cm) and weighs in at 663 kg (control) and 720 kg (output), making it road- and site-ready. Input power encompasses 460V ±5% 3-phase at 60/50 Hz (100 A), with model variations for different power regions. Output voltage is 10 VDC, with fine adjustability of output current. The tester comes with all necessary leads, fuses, lifting hardware, and a comprehensive instruction manual. Megger supports this instrument with worldwide technical offices and parts availability, so users can rely on consistent service wherever their operations take them. With ISO-certified production standards and a legacy of innovation, the CB-360-DC offers users a lifetime of reliable, accurate DC breaker testing capability.