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Knb1-63 High Quality Mini Circuit Breakers
Protection Relays

Knb1-63 High Quality Mini Circuit Breakers | RFQ Sourcing Details

Protection Relays · Quote on request

This is a product procurement detail page: check specs, images, category context and related sourcing paths before sending an RFQ.

Quote on request

Product specs

CategoryProtection Relays
Unitset
CategoryProtection Relays
AvailabilityInquiry required
Updated2026-05-26

Buyer's Digest

Use this page as a product-first sourcing checkpoint before sending an RFQ. Category: Protection Relays. Confirm application fit, capacity, materials, destination, lead time and compliance requirements before comparing suppliers.

Original product description

KNB1-63 series Miniature Circuit Breaker is nice in appearance, reasonable in structure, sound in feature and high in breaking capacity. Installed with standard DIN rail, it is convenient and easy in usage. It is mainly used in the line of AC 50/60.

Hz, rated working voltage to 240V/415V, and rated current to 63A as protection against overload and short-circuit. It can be used as infrequent on-and-off operation and changeover. It complies with standard of GB10963 and IEC/EN60898. Sequence NO.

Release Test Current I/In Start state Tripping Time Expected Restlt 1 B, C, D 1.13. In Cold state T≤ 1h Not tripping 2 B, C, D 1.45. In Start right after The serial NO. 1 test T< 1h Tripping 3 B, C, D 2.55. In Cold state 1s< t< 60s Tripping 4 B C D 3. In 5. In 10. In Cold state T≤ 0.1s Not tripping 5 B C D 5. In 10.

In 20. In Cold state T< 0.1s Tripping Frame class 63A Rated working voltage 240V/415V Rated frequency 50/60.

Hz Rated working current 1, 3, 6, 10, 16, 20, 25, 32, 40, 50, 63A Making and breaking capacity 6000A(6~40A), 4500A(50, 63A) Release type B, C, D Poles 1, 2, 3, 4P Mechanical life 20000 Electric life 4000 Company Introduction Wenzhou Korlen Electric Appliances Co., Ltd, It is a joint venture.

My company is a manufacturer including design, development, produce and sale, professional producing MCB, MCCB, RCCB and AC . Product enterprises. The company owns import and export power of self-run, expanding Europe and America, Middle East, Southeast Asia etc. Market, set a good Public praise.

The company have more than 1500 workers, including senior engineer among them, engineer at inside of more than 100 technician.

And then set up to cover area more than 50 acres, construct area is more than 38000 square meters of the modern industrial zone, providing with the forerunner's standard laboratory and various examination equipments.

Under Korlen people to make great effort unremittingly, designed and developed by oneself, develop and produce the series of MCB, RCCB filled up local blank, attain inter-national advanced level, and acquire more than 20 national patents.

The company acquires "30 strong eminent enterprises, top ten of export income, yueqing star class enterprise, attach importance to contract and keeps promise" title of honor for many times past years. Company still the initiative pass ISO 9001 management system verification and 14001 environments management s

Knb1-63 | Applications and Buyer Notes

Knb1-63 is organized as a sourcing-ready Protection Relays reference. The page combines visible product or company data with structured procurement cues so buyers can compare application fit, specifications, quantity, quality requirements and lead-time questio

Applications

  • Initial shortlist building for related product or supplier options.
  • Specification and application fit review before bulk purchasing.
  • Category, keyword and detail-page comparison before sending an RFQ.

Key specifications

Category
Protection RelaysBased on visible page data; confirm exact value in the RFQ.
Unit
setBased on visible page data; confirm exact value in the RFQ.

Buyer tips

  • State quantity range and split-delivery needs before price comparison.
  • Add certification, material or inspection standards when they affect acceptance.
  • For time-sensitive projects, include target arrival date and destination.
  • For special applications, describe operating condition, installation environment and duty cycle.

FAQ

What should buyers confirm first?

Confirm application, specification, quantity, destination and lead-time requirements before comparing offers.

Can buyers inquire when specs are incomplete?

Yes. Add model, material, size, use case and inspection needs in the RFQ to make replies comparable.

How should this listing be evaluated?

Check title, category, specifications and related keywords against the actual sourcing requirement.

Source mix: ugc

Key specifications

CategoryProtection Relays
Unitset

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