KYW3-2500 Universal Circuit Breaker

1.The circuit breaker provides safety protection, arc extinguishing, and interrupting functions, with defined electrical life and short-circuit withstand capability. 2.Multiple controller options are available, including DIP, LCD, and LCD with communication. 3.A variety of auxiliary circuit contact types are offered to meet application requirements. 4.Undervoltage release, shunt release, and closing solenoid dimensions are standardized across the series. The undervoltage time-delay release includes adjustable delay and adjustable undervoltage delay settings. 5.The circuit breaker is available in fixed and draw-out configurations. The draw-out design includes: A three-position interlocking mechanism, a pointer-type three-position indicator, a three-position rotary unlocking mechanism, a swing-in mechanism for the intermediate position, a single-point safety door opening mechanism 6.Multiple wiring configurations are supported: horizontal, vertical, and mixed. 7.A comprehensive product range includes: three frame current ratings: 1600A, 2500A, and 4000A, two interrupting types: N standard interrupting type for general applications, H interrupting type for applications requiring high breaking capacity and coordination, including systems with high short-circuit currents and dual-transformer parallel operation, Full AC 690V high-performance specifications are available This product range is suitable for OEM and ODM manufacturers.

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KYW3-2500 Technical Parameter List

Circuit breaker model			KYW3-2500
Rated current In (+40 ℃) (A)			630、800、1000、1250、1600、2000、2500
N-pole rated current			100%ln
Rated working voltage Ue (V)			AC220/230/240、AC380/400/415、AC440/480、AC660/690
Rated frequency f (Hz)			50/60
Rated insulation voltage Ui (V)			1800
Rated impulse withstand voltage Uimp (kV)			18
Polar number			3、4
Full break time (ms)			≤30
Closing time (ms)			≤70
Breaking type			S	H
Rated operating short-circuit breaking capacity Ics (effective value) (kA)		AC220V~415V	66	85
		AC440V/480V/660V/690V	55	66
Rated ultimate short-circuit breaking capacity Icu (effective value) (kA)		AC220V~415V	66	85
		AC440V/480V/660V/690V	55	66
Rated short-term making capacity Icm (peak value) (kA)		AC220V~415V	145.2	187
		AC440V/480V/660V/690V	121	145.2
Rated short-time withstand current Icw (effective value) 1s (kA)		AC220V~415V AC440V/480V/660V/690V	6655	8566
Operational performance	Electrical lifespan (times) Operating frequency (20 times/hour)	AC220V~415V	15000(630A~1250A)、11500(1600A~2000A)、11000(2500A)
		AC440V/480V/660V/690V	12500(630A~1250A)、10000(1600A~2000A)、8000(2500A)
	Mechanical lifespan (times) Operating frequency (60 times/hour)	Maintenance-free	15000 (XU product 10000)
		There is maintenance	30000
Installation method		Fixed type, Drawer type
Main circuit wiring method		Horizontal wiring, vertical wiring, horizontal extension wiring, vertical extension wiring, mixed wiring (upper horizontal and lower vertical), mixed wiring (upper vertical and lower horizontal), mixed extension wiring (upper horizontal and lower vertical), mixed extension wiring (upper vertical and lower horizontal)
Overall dimensions：W×D×H(mm)		Fixed type 3P	368×309.5×394
		Fixed type 4P	463×309.5×394
		Drawer type 3P	375×400×432
		Drawer type 4P	470×400×432
		Fixed type 3P	49.4(630A～1250A)	50(1600A~2500A)
Weight(kg)		Fixed type 4P	61.5(630A～1250A)	62.3(1600A~2500A)
		Drawer type 3P	87.1(630A～1250A)	87.4(1600A~2500A)
		Drawer type 4P	106.2(630A～1250A)	106.7(1600A~2500A)

ABOUT US

Kaiyuanfeng Electrical Machinery Manufacturing Co.,Ltd

Jiangsu Kaiyuanfeng Electrical Machinery Manufacturing Co., Ltd. was established in Taizhou in August 2013 with an initial registered capital of 5 million yuan. It is a manufacturer of key circuit breaker components, integrating R&D, design, production, sales, and service.

We adhere to the core values of "building a solid foundation through steadiness, expanding horizons via perseverance, and forging integrity with responsibility", and uphold the founding principle of "integrity, win-win collaboration, and pioneering the future". Guided by the philosophy that "technological innovation drives progress and quality service supports development", we incorporate customer needs into processes from R&D to manufacturing. Our innovation is supported by 28 related patents, addressing key industry challenges. We have obtained ISO certification, implementing a management system aligned with international standards to support operational efficiency and quality assurance.

With over a decade of industry experience, we maintain a customer-centric approach, focusing on reliable products and attentive service to build long-term partnerships. Moving forward, we aim to become a core supplier of key circuit breaker components, contributing to electrical system safety.

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