CBTG1BG Push-Pull Connector for Circuit Breaker Analyzers 2026: 1B 2-Contact 15 A Plug

The CBTG1BG-SMSM02-D52B is a CBTG1BG push-pull connector for circuit breaker analyzers — a 1B straight cable plug with two low-voltage contacts, a rated current of 15 A, published minimum shielding values of 75 dB at 10 MHz and 40 dB at 1 GHz, a push-pull self-locking mechanism, an endurance of 5,000 mating cycles, a nut for fitting a cable bend relief, a supported cable outside diameter of 4.30–5.20 mm, a shielded construction, IP50 protection and operation from -45 °C to +125 °C. Every specification in this guide is backed by the power testing equipment interconnect engineering of Spring Technology.

Pain point: Bringing auxiliary supply or a control circuit into an analyzer on a substation floor — where test leads are re-plugged several times per procedure, the ambient equipment is electrically loud, and a two-wire interface must never be mistaken for the trip or closing coil output?

Core answer: The CBTG1BG-SMSM02-D52B can support reliable auxiliary power and control connections in portable high-voltage circuit breaker testing equipment. A portable circuit breaker analyzer is an essential testing instrument used in electrical substations, power plants and high-voltage switchgear maintenance, helping engineers evaluate the mechanical and electrical operating performance of vacuum, SF6 and other high-voltage breakers. Typical measurements include opening and closing time, pole-to-pole synchronism, contact travel and stroke, opening and closing speed, contact bounce and rebound, and trip and close coil current characteristics — with a typical analyzer integrating a control unit, timing measurement channels, travel transducers, current sensors and a portable power supply. The connector can be considered for a two-wire auxiliary power or control interface within the analyzer’s cable assembly, subject to the equipment’s voltage, current and wiring requirements.

The CBTG1BG-SMSM02-D52B is a straight cable plug on the 1B platform, offered with a two-contact configuration for dedicated auxiliary circuits.

• Latching Mechanism: Push-pull self-locking mechanism (secure after insertion, quick disconnection for servicing)
• Recommended Hardware: Spring Technology Circular Connector and custom cable assembly service
• Key Metric: 2 low-voltage contacts; 15 A rated current; shielded 75 dB / 40 dB; 5,000 mating cycles; IP50

Note: the 15 A rating applies within the connector’s electrical and thermal limits — it should not automatically be used for a circuit breaker’s trip or closing coil output, especially where the test instrument’s output current may exceed the connector rating. The overall shielding performance still depends on the complete cable assembly and system design.

Not every interface on an analyzer needs ten contacts. The design advantages below explain why this CBTG1BG push-pull connector for circuit breaker analyzers suits dedicated two-wire field connections:

• Circuit breaker analyzers often contain separate measurement, control and power circuits, and not every interface requires a multi-contact connector. The CBTG1BG-SMSM02-D52B provides two low-voltage contacts for a dedicated two-wire auxiliary connection — usable for an auxiliary supply, a control circuit or another two-wire electrical interface depending on the system design, keeping dedicated cable connections organised and straightforward.

• According to the published product specifications, the CBTG1BG-SMSM02-D52B has a rated current of 15 A, making it worth evaluating for auxiliary circuits that require a relatively high current capacity within the connector’s specified operating conditions — while the actual operating current must remain within its electrical and thermal limits.

• Circuit breaker testing is frequently performed during commissioning, preventive maintenance and troubleshooting at substations, and technicians may need to connect and disconnect test cables several times during a maintenance procedure. The push-pull self-locking mechanism provides a convenient connection method, securing the plug after insertion and allowing quick disconnection when a cable needs replacing or equipment requires servicing — and the published specification lists an endurance of 5,000 mating cycles for this connector configuration.

• Electrical substations contain transformers, switchgear, power cables and other equipment that may generate electromagnetic interference. The CBTG1BG-SMSM02-D52B has published minimum shielding values of 75 dB at 10 MHz and 40 dB at 1 GHz — and when used with an appropriately shielded cable and properly designed grounding arrangement, the connector can contribute to electromagnetic compatibility in the test instrument’s electrical interface.

• Portable circuit breaker analyzers are transported between substations and used in different field environments, and their test cables may be repeatedly moved, routed and repositioned. The D52B configuration includes a nut for fitting a cable bend relief, allowing a suitable accessory to be installed that reduces mechanical stress near the cable termination — a useful design feature for test cables that undergo frequent handling during commissioning and maintenance work.

Reliable cable connections are important for portable circuit breaker analyzers because their control and measurement functions must work consistently during testing. This CBTG1BG push-pull connector for circuit breaker analyzers offers:

• Two low-voltage contacts: suitable for dedicated two-wire auxiliary and control circuits.
• 15 A rated current: provides a defined current rating for appropriately designed electrical interfaces.
• Push-pull self-locking: supports quick connection and disconnection during field maintenance.
• Shielded construction: helps manage electromagnetic interference when properly integrated into the cable assembly.
• Bend-relief provision: helps protect the cable termination from repeated bending and handling.
• Compact 1B connector design: supports organised cable connections in portable testing instruments.

These characteristics make the CBTG1BG-SMSM02-D52B a potential connector option for auxiliary electrical interfaces in portable circuit breaker testing equipment.

The 1B shell belongs to Spring Technology’s push-pull connector family for industrial instruments and power testing equipment. The same platform serves this CBTG1BG push-pull connector for circuit breaker analyzers and scales across plugs, panel sockets and PCB sockets.

• Plugs: TG 1B straight plugs with cable collet, including the two-contact layout used here.
• Panel sockets: ZGG.1B, ZEG.1B and ZCG.1B fixed panel sockets.
• PCB sockets: ZX 1B sockets with PCB contacts.
• Pin counts: 2–16 contacts across the 1B shell, with key G or keys A…M and R.

• Custom contact allocations and part numbers (such as the CBTG1BG-SMSM02-D52B) matched to each analyzer’s auxiliary circuit.
• Shielded two-wire test lead builds with 360° screen termination and bend relief.
• Grounding and EMC support for timing and coil-current measurement channels.
• Mating receptacle selection support, including keying and contact-layout confirmation.

Portable circuit breaker analyzers play an important role in high-voltage switchgear commissioning and maintenance, helping engineers evaluate opening and closing times, mechanical movement, contact synchronism and coil operating characteristics. The CBTG1BG-SMSM02-D52B combines two low-voltage contacts, a 15 A rated current, push-pull locking and a cable bend-relief provision — features that make it worth evaluating for dedicated two-wire auxiliary power and control connections in circuit breaker testing instruments, with final selection based on the equipment’s electrical requirements, cable specifications and environmental conditions. This connector shows how Spring Technology serves power testing equipment, aligning a shielded 1B plug with the customer’s analyzer requirements, and the company also provides professional customization services for both push-pull connectors and cable assemblies, offering tailored solutions to meet your specific technical requirements.

For more information about our 1B series connectors or to discuss your requirements, contact us at [email protected] or [email protected], or visit our website. Our engineering team will respond to your CBTG1BG push-pull connector for circuit breaker analyzers enquiry within 24 hours.

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