KYW3-4000 Universal Circuit Breaker

1. The circuit breaker offers safety protection, efficient arc extinguishing and interrupting, long electrical life, and short-term withstand capability. 2. The circuit breaker is available with a variety of controllers (DIP, LCD, and LCD with communication). 3. A wide range of auxiliary circuit contact types are available to meet customer needs. 4. The undervoltage release, shunt release, and closing solenoid dimensions are universal across the entire series. The undervoltage time-delay release features both adjustable delay and adjustable undervoltage delay. 5. Circuit breakers are available in both fixed and drawer styles.The drawer design is reliable and unique: a three-position interlocking mechanism, a pointer-type three-position display, a three-position rotary unlocking mechanism, a swing-in mechanism for the intermediate position, and a single-point safety door opening mechanism. 6. The circuit breaker offers a variety of wiring options (horizontal, vertical, and mixed). 7. A comprehensive and rational product line:Three frame current ratings: 1600A, 2500A, and 4000A.Two interrupting types: N standard interrupting type for general applications; H high interrupting type for applications requiring both high breaking capacity and high coordination, especially in industrial environments where very high short-circuit currents may occur. This is also applicable to electrical systems with two transformers operating in parallel.A full range of AC690V high-performance specifications is available.Circuit breaker products are suitable for: OEM or ODM manufacturers.

Get A Quote

PREV：FC30-63/100/225/400/630/800 Auxiliary Contacts NEXT：KYW3-2500 Universal Circuit Breaker

Parameter
Contact Us

KYW3-4000 Technical Parameter List

Circuit breaker model			sYW3-4000
Rated current In (+40 ℃) (A)			800、1000、1250、1600、2000、2500、3200、4000
N-pole rated current			100%In
Rated working voltage Ue (V)			AC220/230/240、AC380/400、AC415、AC440/480、AC660/690
Rated frequency f (Hz)			50/60
Rated insulation voltage Ui (V)			1250
Rated impulse withstand voltage Uimp (kV)			12
Polar number pole			3、4
Full break time (ms)			≤30
Closing time (ms)			≤70
Breaking type			S	H
Rated ultimate short-circuit breaking capacity Icu (effective value) (kA)		AC220V/230V/240V、AC380V/400V	85	100
		AC415V、AC440V/480V、AC660V/690V	75	85
Rated operating short-circuit breaking capacity Ics (effective value) (kA)		AC220V/230V/240V、AC380V/400V	85	100
		AC415V、AC440V/480V、AC660V/690V	75	85
Rated short-term making capacity Icm (peak value) (kA)		AC220V/230V/240V、AC380V/400V	187	220
		AC415V、AC440V/480V、AC660V/690V	165	187
Rated short-time withstand current Icw (effective value) 1s (kA)		AC220V/230V/240V、AC380V/400V	85	100
		AC415V、AC440V/480V、AC660V/690V	75	85
Operational performance	Electrical lifespan (times) Operating frequency (20 times/hour)	AC220V/230V/240V、AC380V/400V	10000(800A~1600A)、8000(2000A、2500A)、6000(3200A、4000A)
		AC415V、AC440V/480V、AC660V/690V	10000(800A~1600A)、6000〔2000A、2500A}、3000(3200A、4000A)
	Mechanical lifespan (times) Operating frequency (60 times/hour)	Maintenance-free	10000
		There is maintenance	15000
Installation method		Fixed type, Drawer type
Main circuit wiring method		Horizontal wiring, vertical wiring, horizontal extension wiring, vertical extension wiring
Overall dimensions： W×D×H(mm)		Fixed type 3P	428 ×300×393.5
		Fixed type 4P	543×300×393.5
		Drawer type 3P	435×403×432(800A~2500A)		435×397.5×432(3200A、4000A)
		Drawer type 4P	550×403×432(800A~2500A)		550×397.5×432(3200A、4000A)
Weight(kg)		Fixed type 3P	59(800A~2500A)		60 (3200A、4000A)
		Fixed type 4P	70(800A~2500A)		71.5(3200A、4000A)
		Drawer type 3P	97(800A~2500A)		103(3200A、4000A)
		Drawer type 4P	114(800A~2500A)		120(3200A、4000A)

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.

Certificate Of Honor