CBZG00BG Push-Pull Connector for Insulation Resistance Testers 2026: 00B Series 4-Contact M7 Panel Socket for Portable Test Instruments for US Client

The CBZG00BG-SFSM04-0000 is a CBZG00BG push-pull connector for insulation resistance testers — a compact 4-contact 00B series fixed panel front-mounted receptacle with an M7 mounting hole, four low-voltage contacts, a 2.5 A rated current, maximum contact resistance of 8.7 mΩ and a PPS insulator. Every specification in this guide is backed by the portable test instrument interconnect engineering of Spring Technology.

Pain point: Fitting an external test interface onto a portable insulation resistance tester — where a display, measurement electronics, battery, control buttons and test terminals already fill the enclosure, and removable test accessories are connected and disconnected all day in the field?

Core answer: For a US client, Spring Technology supplies the CBZG00BG-SFSM04-0000, a 00B series fixed panel front-mounted socket serving as a CBZG00BG push-pull connector for insulation resistance testers. A portable insulation resistance tester, also known as a megohmmeter, evaluates the insulation condition of electrical cables, motors, transformers, switchgear and electrical installations, and these instruments are frequently carried between test locations with removable test leads, measurement accessories, remote controls or external modules. Because the tester is handled in field and laboratory environments, its external connector must combine compact size, secure locking, reliable electrical contact and convenient connection — and this socket’s compact 00B-size housing requires only an M7 panel mounting hole.

This tester connector is built on the ZGG.00B fixed socket platform in the 00B series — Spring Technology’s smallest circular connector family for compact, high-density equipment.

• Latching Mechanism: Push-pull self-latching mechanism (mating plug inserts quickly and securely without threaded coupling)
• Recommended Hardware: Spring Technology Circular Connector
• Key Metric: 00B miniature body; M7 panel mounting hole; 2.5 A rated current; max. 8.7 mΩ contact resistance

Portable test instruments trade space against capability. The design advantages below explain why this CBZG00BG push-pull connector for insulation resistance testers suits compact test and measurement equipment:

• Portable testers must accommodate a display, measurement electronics, battery or power supply, control buttons, test terminals and communication interfaces within a relatively small enclosure. Requiring only an M7 panel drill hole, this connector helps engineers integrate a compact interface into the instrument panel — particularly useful when the tester carries multiple external interfaces.

• Field testing requires test leads and accessories to be connected and disconnected repeatedly. The push-pull self-latching mechanism allows the mating plug to be inserted quickly and securely without rotating a threaded coupling, reducing the time needed to change accessories and simplifying operation for technicians.

• Four low-voltage contacts in a very compact body can be assigned to power, control, signal, reference, accessory identification or remote operation functions depending on the instrument architecture, integrating multiple low-voltage functions into one interface and reducing the number of external connectors on the instrument panel.

• A 2.5 A rated current suits low-voltage auxiliary circuits, control electronics, accessory interfaces and other appropriately designed functions within a portable tester. The actual current capacity of a finished product should be evaluated according to contact loading, ambient temperature, cable specifications and the complete system design.

• A maximum specified contact resistance of 8.7 mΩ helps maintain stable electrical characteristics at the connector interface — important for a precision electrical test instrument, because unstable connections can introduce unwanted variation into the measurement interface. The connector is only one part of the measurement chain: overall accuracy also depends on test leads, contacts, PCB, grounding, calibration and measurement electronics.

• Electrical test instruments often operate around motors, power supplies, electrical panels and switching devices. Shielding performance of at least 75 dB at 10 MHz and 40 dB at 1 GHz helps designers manage interference around the connector and cable interface — useful when routing low-level control or measurement-related signals. Final EMC performance depends on the complete system design, including cable shielding, grounding, enclosure construction, PCB layout and filtering.

• As a fixed panel front-mounted receptacle with a nut-fixing structure, the connector integrates directly into the front or side panel of a test instrument, providing a stable mating interface for removable cables and accessories while keeping external connections organised and making cable replacement and servicing more convenient.

• Weighing approximately 2.63 g, the connector helps designers balance mechanical strength with overall equipment weight in portable instruments, while its small body reduces the enclosure space occupied by the external interface.

• The PPS insulator supports the connector’s compact low-voltage contact arrangement. Material selection matters in professional test equipment because the connector must maintain stable electrical insulation within a small mechanical envelope.

• The connector is specified for 100 g shock resistance and 15 g vibration resistance, adding mechanical performance for equipment routinely moved between work areas. The 00B platform specifies an operating temperature range of -45 °C to +125 °C; the operating limits of the complete tester must nevertheless be determined by its electronics, battery, cable, enclosure, display and other components.

The 00B shell is Spring Technology’s smallest push-pull circular connector family, designed for smaller, lighter equipment while maintaining reliable power and signal connectivity. The same platform serves this tester socket and scales across plug and socket variants.

• Shell: 00B miniature shell size with high packing density.
• Pin counts: 2, 3 and 4 contacts on the 00B shell.
• Connectors: fixed panel sockets (this order), straight plugs and elbow plugs.
• Panel mounting: front-mounted sockets with M7 panel holes in the miniature range.

• Custom contact allocations and part numbers (such as the CBZG00BG-SFSM04-0000) matched to each instrument’s auxiliary circuit plan.
• Panel hole and mounting customization for compact enclosures.
• Shielding and EMC verification for measurement interfaces.
• Pre-wired test accessory and remote control harnesses.

Megohmmeters travel to the equipment, not the other way around. This CBZG00BG push-pull connector for insulation resistance testers serves the instrument’s external interfaces.

Test leads, measurement accessories and external modules connect through the panel socket, with push-pull locking for fast accessory changes on site.

Remote control interfaces, auxiliary measurement modules and low-voltage control signals share the 4-contact layout with a 2.5 A rating.

Service and calibration interfaces benefit from the stable 8.7 mΩ contact performance and the secure nut-fixed panel construction.

This 00B connector delivery for the US client shows how Spring Technology serves portable test instruments — from the M7 panel mounting and 8.7 mΩ contacts of the CBZG00BG-SFSM04-0000 to its PPS insulation and shielding, every detail was aligned with the customer’s insulation resistance tester requirements. Spring Technology 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 00B series connectors or to discuss your requirements, contact us at [email protected] or [email protected], or visit our website.

Building a portable insulation tester or electrical safety instrument? Send us your panel and circuit requirements — our engineering team will respond with a tailored CBZG00BG push-pull connector proposal for your insulation resistance testers within 24 hours.

• CBZC2BG Push-Pull Connector for Portable Spectrum Analyzers 2026: 2B Series 4-Contact 90° PCB Socket for RF Test Instrument Interfaces for Canadian Client
• CBZE1KG Push-Pull Connector for GNSS Surveying Receivers 2026: 1K Series 10-Contact IP68 PCB Socket for Outdoor Positioning Terminals for US Customers
• Push-Pull Connector for Automated Test Equipment 2026: CBZC1BG-SFSM07-0000 and CBTA1BG-SMSM07-0000 for High-Precision Test, Measurement and Industrial Robotics for US Customers
• Push-Pull Connector for Data Acquisition 2026: CBZG0BG-SFSM06, CBZG1BG-SFSM06 and CBZG0BB-SFSM06 for Test, Measurement and Industrial Data Acquisition for Russian Customers
• CBTG2FN Push-Pull Connector for Precision Machine Tools 2026: CBTG2FN-SMSM09-D520 and CBZL2FN-SFPM09-S000 for Multi-Channel Miniature Sensor Aggregation for Russian Client
• ZGG.00B Fixed Socket — Product Page
• 00B Series Connector