YIZHOU CHENGYUAN relays and industrial modules

YIZHOU CHENGYUAN relays: CYF1-S bistable latching relays, CYF power relays, interface DIN rail modules, and components for industrial automation.

CYF1-S series magnetic latching relays with bistable retention

Bistable CYF1-S relays feature magnetic contact latching that eliminates steady coil power consumption in static states. The unit switches current ratings up to 16 A at 250 VAC while retaining designated contact positions during complete control circuit power losses.

Zero static electrical power consumption enabled by magnetic latching technology
Contact switching ratings reaching 16 A at 250 VAC and 28 VDC in compact enclosures
Contact configurations fabricated from AgSnO2 and AgCdO contact materials
Preservation of switch contact positions upon sudden system supply interruptions

Compact CYF2-S series bistable relays in 14F package dimensions

Pulse-driven CYF2-S relays housed within standardized 14F miniature packages handle currents from 5 to 8 A with dielectric withstand ratings reaching 5000 V. They serve industrial metering devices, feeder protection units, and automated distribution panels.

Reinforced insulation between coil and contact assembly rated up to 5000 VAC
Operating switching currents from 5 to 8 A tailored for energy-efficient circuits
Standard through-hole terminals for dependable printed circuit board soldering
Plastic-sealed and flux-proof enclosure variants for demanding industrial shops

High-capacity CYF3-S series pulse relays for heavy industrial loads

Polarized CYF3-S relays provide dependable switching across alternating current circuits up to 16 A with peak power ratings reaching 5000 VA. The product is engineered for smart circuit breakers, photovoltaic power inverters, and uninterruptible power systems.

Switching inductive and resistive loads up to 5000 VA across industrial phases
Single-coil and dual-coil control drive options for flexible control topologies
Extended electrical durability rated for not less than 100,000 switching operations
Eco-friendly contact alloy formulations devoid of hazardous heavy metal elements

Ultra-compact CYA-S series polarized relays in 3F package profiles

Miniature bistable CYA-S relays (3F profile) are engineered for high-density printed circuit boards. They switch currents up to 10 A while consuming energy only during drive pulses of 10 ms or greater applied across relay coil windings.

Reduced base footprint optimized for dense multi-channel board layout spacing
Short actuation drive pulse width requirement maintained from 10 to 20 ms
Low closed-circuit contact interface resistance maintained below 50 mOhm
Shock acceleration resistance rated to 100 m/s2 and vibrations up to 55 Hz

General-purpose electromagnetic power relays in CYF, CYA, and CYT90 series

Conventional power relays in the CYF and CYT90 series deliver continuous switching across motor circuits, compressors, industrial heaters, and process pumps. They accommodate coil control voltages from 5 to 48 VDC and load currents up to 30 A over 100,000 cycles.

Continuous switching load ratings up to 30 A for machine tool drives and fans
High dielectric voltage breakdown withstand across open contact assemblies
Broad selection of coil control voltages: 5, 6, 9, 12, 24, and 48 VDC
Continuous thermal coil stability in ambient operating temperatures up to +85 °C

Industrial interface relay modules in MCYF and M49F series for 35 mm DIN rails

Multi-channel interface modules in the MCYF1, MCYF2, and M49F series provide galvanic isolation between PLC controller outputs and field actuators. Modules incorporate screw terminals, LED status indicators, and integrated protective clamp diodes.

Rapid clipping onto standard 35 mm DIN rails inside automated electrical cabinets
Integrated bright LED operation status indicators for each discrete channel
Protective flyback suppression diodes attenuating inductive voltage spikes
Convenient socketed relay replacement without disconnecting external signal wiring

Ningbo Yinzhou Chengyuan factory history and manufacturing profile

Manufacturing enterprise Ningbo Chengyuan Chuangke Electronics Co., Ltd. (historically known as Ningbo Yinzhou Chengyuan Electronic Device Factory) has specialized in developing and fabricating electromagnetic relays for nearly three decades.

The production facility is situated within Jiacun Industrial Zone, Yunlong Town, Yinzhou District, Ningbo City, Zhejiang Province, occupying an operational floor area exceeding 3,500 square meters.

The plant maintains structured operations conforming to international quality management guidelines ISO9000 and retains an internal engineering team of fifty qualified technical specialists.

Annual factory production throughput reaches 15 million relay units serving instrumentation and metering sectors.

Operating principles and circuitry of CYF-S bistable latching relays

Magnetic polarized relays across the CYF1-S, CYF2-S, and CYA-S series function through bistable retention of the movable armature via internal permanent magnetic circuits.

Unlike standard electromagnetic units requiring continuous holding currents across excitation coils, the CYF1-S relay draws electrical energy solely during brief actuation pulses lasting 10 to 20 milliseconds.

Once pulse voltage ceases, the contact assembly remains securely interlocked in either energized or de-energized alignment.

This eliminates unwanted coil heating, delivers zero static power consumption, and protects circuit continuity during sudden auxiliary power interruptions in electrical distribution gear.

General purpose power relays in industrial motor and drive circuits

For switching power circuits in electric drive motors, refrigeration compressors, fluid pump stations, and industrial heating elements, the CYF, CYA3, and CYT90 series provide dependable endurance.

These components accommodate continuous load currents up to 30 A at 250 VAC with an electrical endurance rating exceeding 100,000 continuous switching operations.

Reinforced insulation separating the contact mechanism from the control winding withstands breakdown test voltages up to 5,000 VAC for one full minute. The portfolio offers coil voltage ratings of 5, 12, 24, and 48 VDC for seamless integration into control cabinet wiring.

Interface DIN rail relay modules for programmable logic controllers

Industrial interface modules in the MCYF1, MCYF2, and M49F series provide complete multi-channel switching blocks engineered for standard 35 mm DIN mounting rails.

These assemblies deliver dependable galvanic isolation between discrete outputs of programmable logic controllers and higher-power field actuators on processing lines.

Each individual channel incorporates a luminous status diode, screw clamp terminals accommodating wire gauges up to 2.5 mm2, and a high-speed suppression diode quenching inductive turn-off energy.

The socketed terminal design permits rapid relay replacement without disconnecting external field signal cabling.

Contact alloy technology and arc erosion prevention in inductive loads

Operating longevity and minimal interface contact resistance across YIZHOU CHENGYUAN relays are achieved through specialized sintered metallurgical compositions including AgSnO2 (silver tin oxide) and AgCdO (silver cadmium oxide).

The AgSnO2 alloy exhibits remarkable resistance against electrical arc erosion and prevents contact tip welding under elevated inrush currents generated by LED drivers, power supply filter capacitors, and solenoid valves.

Initial closed-circuit contact resistance remains below 50 mOhm under a 1 A test current, ensuring negligible line voltage drop and high transmission fidelity in discrete circuits.

Printed circuit board mounting guidelines and thermal specifications

When laying out printed circuit boards for CYF1, CYF2, and CYA series components, engineering teams must evaluate thermal dissipation and maintain recommended insulation clearances between high-voltage traces and logic-level tracks.

To avoid mechanical stress across pin terminals, wave soldering should proceed with solder pot temperatures capped at 260 °C and dwell intervals under 5 seconds.

Sealed plastic shell options facilitate automated washdown of assembled boards to remove flux residues without chemical ingress into inner contact chambers. For humid or vibrating industrial environments, plastic sealed variants with protective conformal coating are advised.

YIZHOU CHENGYUAN and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of YIZHOU CHENGYUAN and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.