RailMac JSD Series Modular Terminal Blocks (Urban Rail Transit)

The JSD Series Modular Terminal Blocks (including JSD-70 and JSD-150 models) are versatile electrical connection solutions engineered for high-voltage, high-current transmission scenarios. Designed with serialization and modularity at their core, these terminal blocks consist of bases, interchangeable modules, baffles, connection plates, and fasteners—enabling flexible combination of modules by spec and quantity to adapt to diverse wiring needs, significantly expanding their application scope.
Functionally, the JSD-70 variant accommodates cables up to 70mm², while the JSD-150 supports cables up to 150mm²; both achieve stable electrical signal transmission via crimp terminal connections. Constructed from advanced flame-retardant materials, they exhibit exceptional resistance to mechanical and current impacts, ensuring reliable performance in harsh operating environments.
Ideal for integration with equipment enclosures, these terminal blocks excel in high-power transmission scenarios—such as industrial control cabinets, rail transit power systems, and heavy-duty electrical setups. Their modular design simplifies customization: users can mix modules to match specific current, cable size, and connection requirements, balancing flexibility with robust, safe operation. As a cost-effective, adaptable solution, the JSD Series meets the demands of both standard and custom electrical infrastructure.

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Advantages of RailMac JSD Series Modular Terminal Blocks (Urban Rail Transit)

Serialized development and modular design allow for the combination of different modules; both JSD-70 and JSD-150 terminal blocks consist of a base, module, baffle, connecting plate, and fasteners;
The JSD-70 terminal block can connect cables up to 70 square millimeters, while the JSD-150 terminal block can connect cables up to 150 square millimeters; electrical signal transmission is achieved through crimped terminal connections;
Made of new flame-retardant materials, offering excellent resistance to mechanical and electrical impacts;
Used in conjunction with an enclosure, it meets the requirements for high-voltage, high-current transmission applications;
The terminal block modules can be combined in various specifications and quantities as needed, expanding its applicability.

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Power Connector Series Products

This is the products related to Power Connector Series.
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RailMac Emergency Power Supply Quick Connector

This Emergency Power Supply Quick Connector
adopts a strap spring structure for reliable
contact and low resistance. It features fast
installation, easy operation, and secure latching to prevent loosening, with IP68 protection when mated and touch protection when unmated.

RailMac 1000A DC Connector

This 1000A DC Connector integrates charging
confirmation, communication, and emergency
stop interfaces. Boasting excellent corrosion
resistance, it suits humid, salt-laden marine environments, enabling safe, high-power 1000A DC transmission with robust functionality and environmental adaptability.

RailMac 420A Power Connector

This 420A Power Connector excels in corrosion
resistance, fitting humid, salt-laden marine
environments. It has a mechanical lock to
prevent live plugging and IP67 protection, enabling safe, stable 420A high-power transmission in harsh conditions.

RailMac 250A DC Connector

This 250A DC Connector supports charging
confirmation, communication, and emergency
stop interfaces. With excellent corrosion
resistance,it is ideal for humid, salt-laden marine environments, delivering reliable 250A DC power transmission with robust environmental adaptability and functional versatility.

RailMac 250A Low-Voltage Connector

This 250A Low-Voltage Connector boasts strong
corrosion resistance, suiting humid, salt-laden
marine environments. It features a mechanical
lock to prevent live plugging and IP67 protection, delivering safe, reliable 250A low-voltage current transmission in harsh conditions.

RailMac Low-Voltage Smart Shore Power Pile

This Low-Voltage Smart Shore Power Pile uploads
operational data via a network module for remote
monitoring and querying. It offers metering
/billing, fault alerts, plus protection functions (connection confirmation, emergency stop, short-circuit/lightning protection) for safe, intelligent port power supply.

RailMac Transfer Cable

This Transfer Cable enables quick connection
between ships and port shore power equipment
with mismatched interfaces. One plug links to
the port’s output, while the mobile socket on the other end adapts to various ship-side interface specifications, streamlining shore power transitions.

RailMac High-voltage connector

This high-voltage connector excels in corrosion
resistance, suiting humid, salt-laden marine
environments.It features a mechanical lock for
live-plug protection and IP67 sealing, ensuring safe, reliable operation in harsh conditions while supporting high-voltage power transmission.

RailMac Control Connector

This control connector (per GB/T 25022.3-2023)
integrates network/control signals, with
continuous shielding. It features multi-guide
structures for “blind mating”, stable axial contact positioning (ideal for frequent plugging), and 54 contacts + 3 ports, ensuring reliable rail transit communication.

RailMac Power Connector

This power connector, ideal for 160/200km/h
electric multiple units, features IP67 sealing,
compact labyrinth insulation, and multi-layer
anti-misinsertion. Its stable contact positioning ensures safe power transfer, complying with GB/T 25023-2010, TB/T 3213-2009, and GB/T 21563-2018 standards.

RailMac M12 Connector

This M12 Connector meets IEC standards,
boasting high signal integrity and 360°
circumferential shielding for strong
anti-interference. It features low contact resistance, long mechanical life, and high voltage tolerance. Simple to assemble, it serves industrial automation, plus measurement, robotics, aerospace, and alternative energy sectors.

RailMac Rectangular Medium-Pressure Connector

This Rectangular Medium-Pressure Connector
features an aluminum alloy shell,flame-retardant
insulators, and a detachable rear cover. With
dual anti-misinsertion structures and IP67+ sealing, it ensures reliable bolted connections. The corrosion-resistant shell and maintainable contacts suit harsh industrial environments.

RailMac 102-Core Equipment Connector

This 102-Core Equipment Connector features
flame-retardant insulators, contacts, and
a shell-less integrated frame for easy installation.
It enables power/control/signal transmission for air-con, PIS, and driver’s cabinets. Boasting diverse specs (12/17-core 10A, etc.), it supports flexible module combinations to fit varied wiring needs.

RailMac 64-Core Full Module Equipment Connector

The 64-Core Full Module Equipment Connector
consists of flame-retardant insulators, contacts,
springs and fasteners. It suits air conditioning,
PIS and driver’s cab control cabinets in transit systems. Its integrated modular design ensures straightforward installation, enabling reliable connections for diverse on-board equipment.

RailMac 72-Core Equipment Connector

This 72-Core Equipment Connector for urban rail
transit features flame-retardant insulators,
contacts,integrated frame and fasteners. Its
modular design supports power, control and signal transmission for air conditioning cabinets, PIS cabinets and driver’s cab control cabinets. With multiple core configurations (12/17-core 10A, 6/8-core 16A, 2/3-core 40A), it allows flexible combinations to meet diverse wiring needs, ensuring easy installation.

RailMac D-Sub (MVB) Connector

This D-Sub (MVB) Connector complies
with IEC61375-1 standard, delivering high signal
integrity and excellent performance. It features
360° circumferential shielding for strong anti-interference, supports MVB communication protocol, and comes in male (pin) and female (socket) versions. With 9-pin D-SUB design, it enables fast, stable signal transmission for vehicle bus control systems, easy to install as terminal or repeater.

RailMac Motor Connector

RailMac’s motor connectors are tailored for rail
vehicles and other transportation applications.
Boasting a highly reliable structure, select models
come with a unique anti-disconnection design, which effectively resists vibration and guarantees stable signal transmission in transportation scenarios.

RailMac Hook-and-loop Connector

RailMac’s hook buffer connector is a core electrical
component for subway semi-automatic couplers.
With an innovative symmetrical floating design
and floating insulator plate assembly, it offsets coupler gaps, avoids contact wear and signal interruptions, and enhances reliability.

RailMac Rectangular Network Connector

RailMac’s rectangular network connector features
a high-density design. The company holds a
patent for a specialized auxiliary mating fixture
that addresses the challenge of high insertion and extraction forces in multi-core connectors, enabling fast and uniform mating while preventing damage and enhancing reliability. The product is widely used in transportation fields such as railways and aerospace.

RailMac Rectangular Control Connector

RailMac’s rectangular control connector caters to
industrial automation and rail transit, enabling
reliable signal/power transmission. Boasting a
patented auxiliary mating design, modular structure, anti-misinsertion, and blind mating tech, it excels in harsh environments, boosting installation efficiency and reliability while cutting maintenance costs.

RailMac Intermediate connector

RailMac’s intermediate connector is designed for
power and signal transmission at the ends of rail
vehicles. Its core lies in the innovative symmetric
floating structure, which effectively absorbs displacement caused by coupler gaps, completely eliminating harmful sliding wear between contacts, ensuring continuous and stable signals. The product integrates multiple guidance and high-reliability blind mating technology, supporting fast and accurate docking in complex wiring environments.