What is the difference between NTC and PTC thermistors?

NTC is good for measuring temperature because the change is smooth and predictable. PTC is good for protecting circuits because of its sharp resistance increase at a set point.

What is the maximum current rating?

The maximum current ranges from 15A to 20A.

Can the wire type be customized?

Yes, different types of connectors and wires are available upon request.

Ceiling-Mounted Bathroom PTC Heater Fan Thermo Ventilator Warmer

Name: Ceiling-Mounted Bathroom PTC Heater Fan Thermo Ventilator Warmer
Brand: Guangdong Ruiji Precision Electronics Co., Ltd
SKU: 2151399822

Guangdong, ChinaGuangdong Ruiji Precision Electronics Co., Ltd

US$3.50

100-9,999 Pieces

US$2.00

10,000-49,999 Pieces

US$1.50

50,000+ Pieces

Product specifications

Watts

Volts

Surface Temperature

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Certification

RoHS, ISO9001

Type

PTC Heater

Material

Ceramic/Aluminum

Form

PTC Heating Elements

Shape

Square

MOQ

10PCS

Wire Length

Customized

Warranty

1 Year

RoHS

Compliant

Transport Package

Carton

Specification

ptc air heater

Trademark

neutral

Origin

China

HS Code

85162990

Production Capacity

100000 Pieces Per Month

Key features

Customized Wire Length: Wire length can be customized to meet specific installation requirements.

High Voltage Compatibility: Supports DC voltages from 350V to 800V for electric vehicle applications.

Rapid Heat Transfer: Transforms electricity to heat and conveys it to the aluminum shell within 10 seconds.

Long Service Life: Provides consistent heating performance for over 10,000 hours of operation.

Self-Limiting Temperature: PTC material increases resistance sharply as temperature rises for safety.

RoHS Compliant: Product meets RoHS environmental standards for restricted hazardous substances.

Flexible Power Range: Available in power options ranging from 1KW to 2KW for various needs.

1-Year Warranty: Covers mechanical defects and ensures product reliability for one year.

Company profile

Guangdong Ruiji Precision Electronics Co., LtdGuangdong, China

Business Type: Manufacturer/FactoryExport Year: 2009-08-08Nearest Port: ShenzhenAverage Response Time: ≤6.86hTerms of Payment: PayPal, T/T, Credit CardInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DDP, DAP, FCA, Others

AI-Powered supplier vetting

SummaryThe provided information presents Guangdong Ruiji Precision Electronics Co., Ltd as a China-based manufacturer/factory in Dongguan, Guangdong, established in 2009 and focused on PTC heaters, PTC thermistors, NTC thermistors, NTC sensors, and heating elements. It reports ISO 9001 certification, RoHS compliance, 6–10 R&D engineers, 6–10 quality-control staff, eight production lines, and nearly 100 million units of annual production capacity. The company states that it provides OEM/ODM services and serves customers in consumer electronics, household appliances, automotive, industrial equipment, HVAC, and related sectors. Export sales are reported at 51%–70%, with exporting since 2009. However, the slices contain inconsistent supplier identities: several records concern Guangdong Ruiji, while others identify Dongguan Tianrui Electronics Co., Ltd. This discrepancy should be resolved before relying on the combined capability claims.

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory, with activities covering research, development, production, and sales of PTC and related thermistor products. However, the records use both Guangdong Ruiji Precision Electronics Co., Ltd and Dongguan Tianrui Electronics Co., Ltd, creating an identity inconsistency that should be verified.

CertificationsThe supplier explicitly reports holding ISO 9001 certification, and its products are stated to be RoHS compliant. These are direct positive indicators of documented quality management and product-compliance practices, although the specific scope, issuing body, and validity period are not provided.

R&D capabilityThe company is described as focusing on research and development, continuous improvement, and innovation, with 6–10 R&D engineers. It also reports eight automated assembly lines, which supports process modernization, but there is no evidence of patents, dedicated laboratories, new-product records, or quantified R&D results.

Production capacityReported production resources include eight production lines, eight automated assembly lines, 6–10 quality-control staff, and nearly 100 million units of annual capacity across a 5,000-square-meter facility. These explicit figures support substantial manufacturing capability, although the slices do not clarify whether all figures belong to the same legal entity because of the Ruiji/Tianrui identity inconsistency.

Customization capabilityThe supplier explicitly states that it provides OEM/ODM services, directly supporting the ability to undertake customer-specific product or manufacturing requirements. No details are provided on customization scope, engineering workflow, tooling, minimum order quantities, or development lead times.

Product Q&A

Q:Are you a trading company or manufacturer?

We are a factory.

Q:How long is your delivery time?

Generally it is 3 days if the goods are in stock. Or it is 5-10 days if the goods are not in stock, according to the quantity.

Q:Do you provide samples? Is it free or extra?

Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q:What is your terms of payment?

T/T in advance.

Q:What are the main applications of PTC heaters?

They are widely used in electric vehicles for cabin heating, window defrosting, battery thermal management, and in home appliances like clothes dryers and air purifiers.