Why use spring-loaded terminal blocks in control wiring?

They ensure stable, vibration-proof connections that maintain contact pressure without re-tightening, ideal for long-term panel reliability.

How do push-in spring terminal blocks speed up installation?

Simply insert the conductor without tools, the spring mechanism locks it securely, reducing wiring time by up to 50%.

What's the benefit of a DIN-rail spring terminal block with a lever?

The lever allows easy conductor release without tools, making frequent wiring changes faster and safer.

When should I choose a 41A spring clamp terminal block?

For compact power distribution where high-current capability and maintenance-free performance are required.

Why choose a compact multi-level spring terminal block?

It maximizes wiring density in control cabinets while maintaining clear circuit separation in a small footprint.

Reliable Insulation Connection Terminals with Four Lead Design

Name: Reliable Insulation Connection Terminals with Four Lead Design
Brand: Shanghai Leipold Electric Co., Ltd.
SKU: 1901073162

Shanghai, ChinaShanghai Leipold Electric Co., Ltd.

US$0.21

100-999 Pieces

US$0.11

1,000+ Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Application

PCB, Cable, Car

Environmental Protection

General

Model NO.

JST2.5-QU

Connection Mode

Push-Pull Connection

Shape

Rectangle

Contact Termination Form

Screws Fixed

Type

Composite Electric Connector

Character

Insulation

Production Process

Injection Molding

Interface Type

AC/DC

Brand

Leipole

Connection Standard

IEC 60947.7-1

Insulating Material

PA66

Inflammability Class

UL 94 Vo

Lead Time

3 Weeks

History

More Than 20 Years

Color

Grey

Customized

Market Occupancy

More Than 70%

Packing

50PCS

Rated Current

28A

Rated Voltage

800V

Connection Type

Screw Connection

End Cover

Grey

Solid Cross Section

0.2mm2-4mm2

Stranded Cross Section

0.2mm2-2.5mm2

Transport Package

Exporting Cartons

Specification

T5.2*H36*W73

Trademark

LEIPOLE

Origin

Shanghai China

HS Code

8536909000

Production Capacity

50000PCS/Month

Key features

Vibration Tolerance: Maintains electrical integrity and clamping force under continuous shocks and vibrations.

Tool-Free Installation: Spring mechanism locks conductors securely without tools, reducing wiring time by up to 50%.

Flame Retardant Material: Constructed with UL 94 V-0 rated PA66 insulating material for enhanced safety.

Multi-Application Support: Suitable for PLC, sensors, HVAC, railway, and renewable energy inverters.

Stackable Design: Features standardized slots for quick installation of jumper bars and busbars.

Global Compliance: Meets IEC 60947-7-1, RoHS, and REACH directives for international markets.

Company profile

High Repeat Buyers ChoiceCooperated with Fortune 500Self-brandedExhibition Experience

Shanghai Leipold Electric Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2001-12-01Nearest Port: Shanghai, NingboAverage Response Time: ≤2.17hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, EXW, DDP, FCA

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad customization and R&D capabilities, including ODM services, recent product development, multiple design tools, and documented design processes. It has established quality and service procedures, inspection instructions, ERP-based operational management, ISO9001:2015 and CE certifications, export experience, overseas service coverage, inventory capacity, and stated lead times within 15 workdays in both peak and off-seasons. Manufacturing-related evidence includes valid contracts with associated subcontractors and OEM service for well-known brands, but production scale and equipment details are limited. Financial records are referenced for 2021–2023, yet no explicit financial strength assessment is provided. Customer-case evidence is limited to OEM service for well-known brands and participation in CIIF.

Supplier typeThe supplier has self-operated import/export rights, 23 years of export experience, inventory and overseas warehouse capabilities, overseas agents or branches, and OEM service for well-known brands. These indicators support classification as an export-oriented manufacturer or manufacturing supplier with international service capability, although the exact legal or organizational supplier type is not stated.

CertificationsThe supplier reports an ISO9001:2015 certificate and CE certification capability. These are explicit certification-related credentials supporting quality-management and product-compliance capability.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and customer complaints, maintains inventory and overseas warehouse capability, and provides overseas agents or branches in Singapore. Its service assessment procedures are also documented, while no overseas showroom is available; the evidence nevertheless supports structured after-sales and international service capability.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and has R&D personnel responsible for new products, AutoCAD drawings, and production technology support. It also maintains auditable design input, output, review, verification, and validation documentation and uses AutoCAD, Pro/E, and SolidWorks; no SDK is available.

Production capacityProduction-related evidence includes quality assurance, uniformly followed finished-product inspection instructions, inventory capability, valid manufacturing contracts with associated subcontractors, ERP digital management across production, procurement, quality control, and logistics, and lead times within 15 workdays in both seasons. The stated own-brand quantity quality-control capability is limited to 1, and production capacity scale is not otherwise specified.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides ODM services and reports recent new-product development, demonstrating broad customization coverage.

Product Q&A

Q:Can I insert stranded wires directly into JST blocks?

Yes. JST terminals securely hold both solid and stranded wires. For stranded wires, using ferrules can improve insertion consistency.

Q:How do I release a wire from a JST spring terminal?

Use a flat-blade screwdriver or the integrated release button to depress the spring element, then pull the conductor out easily.

Q:Are JST spring terminals suitable for high-vibration environments?

Absolutely. The spring mechanism consistently maintains clamping force even under continuous vibration, making them ideal for mobile machinery and rail applications.

Q:What safety standards do JST blocks comply with?

JST Series uses UL94 V-0 flame-retardant PA66 housing and meets IEC/EN 60947-7-1 requirements for terminal blocks. They also conform to RoHS and REACH directives.

Q:Can I stack or bridge multiple JST blocks?

Yes. JST blocks feature standardized lateral and vertical bridge slots, allowing quick installation of jumper bars or busbars for parallel or multi-pole circuit distribution.