KYW3-1600 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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Parameter
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KYW3-1600 Technical Parameter List

Circuit breaker model			KYW3-1600
Rated current In (+40 ℃) (A)			200、400、630、800、1000、1250、1600
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)			1000
Rated impulse withstand voltage Uimp (kV)			12
Polar number pole			3、4
Full break time note (ms)			≤25
Closing time：2 (ms)			≤60
Rated ultimate short-circuit breaking capacity Icu (effective value) (kA)		AC220V/230V/240V AC380V/400V/415V	65
		AC440V/480V AC660V/690V	50
Rated operating short-circuit breaking capacity Ics (effective value) (kA)		AC220V/230V/240V AC380V/400V/415V	65
		AC440V/480V AC660V/690V	50
Rated short-term making capacity I cm (peak value) (kA)		AC220V/230V/240V AC380V/400V/415V	145
		AC440V/480V AC660V/690V	105
Rated short-time withstand current Icw (effective value) 1s (kA)		AC220V/230V/240V AC380V/400V/415V	55
		AC440V/480V AC660V/690V	42
Operational performance	Electrical lifespan (times) Operating frequency (20 times/hour)	AC220V/230V/240V AC380V/400V/415V	10000(200A~630A)、8000(800A~1250A)、6500(1600A)
		AC440V/480V AC660V/690V	8000(200A~630A)、5000(800A~1250A)、3000(1600A)
	Mechanical lifespan (times) Operating frequency (60 times/hour)	Maintenance-free	10000
		There is maintenance	20000
Installation method		Fixed type、Drawer-type
Main circuit wiring method		Horizontal wiring, vertical wiring, mixed wiring (upper horizontal and lower vertical), mixed wiring (upper vertical and lower horizontal)
Overall dimensions： W×D×H(mm)		Fixed type 3P	259×200.5×318
		Fixed type 4P	329×200.5×318
		Drawer-type 3P	282×305×351.5
		Drawer-type 4P	352×305×351.5
Weight(kg)		Fixed type 3P	22(200A~630A)	23(800A～1600A)
		Fixed type 4P	34(200A~630A)	35(800A～1600A)
		Drawer-type 3P	43(200A~630A)	44(800A~1600A)
		Drawer-type 4P	56(200A~630A)	57(800A～1600A)

Note: 1. Full breaking time: The time interval from the moment the circuit breaker is disconnected to the moment the arc time ends.

2. Closing time: The time interval from the moment the circuit breaker is closed to the moment when all contacts of the poles are in contact.

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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