How do you ensure the quality control of these thermostats before shipping?

Every single water heater thermostat undergoes 100% automatic calibration and electrical testing on our production line. We perform rigorous tests on temperature response accuracy, manual reset functionality, and dielectric strength to ensure zero defects upon arrival.

Adjustable Bimetal Water Heater Thermostat Ksd308 Temperature Control Switch with Manual Reset Button

Name: Adjustable Bimetal Water Heater Thermostat Ksd308 Temperature Control Switch with Manual Reset Button
Brand: Taizhou Mingjia Electric Co., Ltd.
SKU: 1999052031

Zhejiang, ChinaTaizhou Mingjia Electric Co., Ltd.

US$5.72

100-999 Pieces

US$4.92

1,000-4,999 Pieces

US$4.29

5,000-9,999 Pieces

US$4.08

10,000-99,999 Pieces

US$3.42

100,000+ Pieces

Sample price:US$11.00/piece.Request sample

Product profile

Customization

Available

Customized

Certification

RoHS, ISO9001, CE, UL,TUV

Brand

Majade

Display Type

Majade

Temperature Rangege

20ºC-150ºC

Technical Parameters

15A-60A 120V/250V/400V

Usage

Water Heaters,Heaters,Washing Machines,Ovens

Function

Automatic Reset/Manual Reset

Transport Package

Carton Packing

Specification

0.8-1.0mm optional

Trademark

MAJADE

Origin

China

HS Code

9032100000

Production Capacity

1000000pieces/Year

Key features

POWERFUL PERFORMANCE: Electric Water Heater Thermostat built in safety switch to prevent overheating and tune-up kit helps you renew or repair an electric water heater system as it comes with a comple

WIDE MATCH: Electric water heater element kit perfect for most electric heaters. Water heater Thermostat fits for WHIRLPOOL, GS WOOD, KENMORE, GE, A.O Smith, STATE, RELIANCE, GENERAL ELECTRIC, MOR-FLO

EASY INSTALLATION: Easy to install the water heater, but be careful not to stuff business cards between the thermostats, it's nice to bend the thermostat mounting clips so that the thermostat fits snu

More Durable:Extra Longer Life of Heating Element with Chromed Coating on the Heating Area

Company profile

High Repeat Buyers ChoiceSelf-brandedImporters and ExportersMulti-language Pioneer

Taizhou Mingjia Electric Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 2 years CertifiedNearest Port: Ningbo portAverage Response Time: ≤3.18h

AI-Powered supplier vetting

SummaryTaizhou Mingjia is a limited company manufacturing and selling switches and thermostats, with 23 production lines, automatic and assembly lines, inventory capability, and export activity. Its thermostat and switch operations are stated to hold ISO9001:2015 quality management certification, while CE and UL certifications are also identified. The supplier demonstrates broad customization, ODM, and OEM capabilities, including new product development during the past year. Documented procedures exist for corrective actions, customer complaints, supplier assessment, and finished-product inspection. However, quality inspection staffing is limited to one inspector, there is no valid manufacturing-capacity contract with related subcontractors, and no standard outsourcing procedure or ongoing batch quantity reconciliation is reported. Overseas warehouse and showroom capabilities, SDK availability, and customer-specific case details are not evidenced.

Supplier typeThe supplier is identified as a limited company with a combined company type. Its stated business scope covers manufacturing and sales of switches and temperature controllers, plus import and export of goods and technology, and its offered products are switches and thermostats.

CertificationsThe company states that its thermostat and switch operations have ISO9001:2015 quality management system certification. The provided information also lists CE and UL product certification capability, supporting a positive certification assessment.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and customer complaints, as well as written supplier-service assessment procedures. It has inventory capability, but no overseas warehouse or showroom; the evidence supports service-process capability rather than full overseas service coverage.

R&D capabilityThe supplier reports new products during the past year and offers ODM services, indicating active product development. It does not have an available SDK, but SDK availability is not sufficient by itself to negate the evidenced R&D and ODM capability.

Production capacityProduction evidence includes 23 production lines, automatic and assembly lines, inventory capability, and finished-product inspection instructions that are uniformly followed. Risks remain because there is no valid manufacturing-capacity contract with related subcontractors, no outsourcing SOP, and no ongoing batch quantity reconciliation.

Customization capabilityThe supplier explicitly provides customization from samples, designs, full customization, minor customization, and flexible customization. These capabilities are stated consistently across the R&D and design-service information, supporting a strong customization assessment.

Client casesThe company description states that many customers regard it as a high-quality supplier, and the supplier reports providing OEM services for well-known brands. No specific customer names, projects, order results, or case details are supplied.

Product Q&A

Q:What specific electric water heater models or brands is this thermostat compatible with?

This water heater thermostat kit is designed as a high-quality universal replacement part. It is compatible with major residential electric water heater brands such as A.O. Smith, Rheem, Kenmore, Whirlpool, Reliance, and Bradford White that utilize standard surface-mounted thermostats.

Q:What are the exact technical specifications (Voltage, Amperage)?

The dual-element and single-element controls feature: Electrical Rating: 120-480 V AC, suitable for 20A to 30A residential or light commercial water heater circuits. Safety Reset: The upper limit switch (ECO) features a manual Red Reset Button that trips if the water temperature exceed

Q:Do your water heater thermostats carry international safety certifications like UL or CE?

Yes, absolutely. Product quality and safety are our top priorities. Our thermostats are fully UL / CE certified (E342946 or equivalent) to ensure compliant and safe operation in the North American and global markets. The UL marks are clearly stamped on the housing of the units .

Q:Can I buy these individually or do they come as a combination kit (Upper & Lower Thermostats)?

We offer flexible sourcing options for B2B buyers. You can order them as: The Upper Thermostat Switch with the manual red reset button (High Limit/ECO). The Lower Thermostat (Standard style for temperature regulation). A Complete Kit (1 Upper + 1 Lower) which is the most popular combination for a full water heater overhaul. Please contact our sales team to customize your bulk packaging and kit preferences.

Q:What is your Minimum Order Quantity (MOQ) and lead time for OEM/Wholesale orders?

Standard MOQ: Generally 500 to 1,000 pieces per model, but we accept lower quantities for trial orders to test market compatibility. OEM/ODM Customization: We offer laser-printing for your brand logo, custom temperature ranges, and customized retail box packaging. Lead Time: Typically 15-25 days depending on the order volume and customization requirements.