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Glass-Glaze (RX20 / ZG11) wirewound resistors

Glass Glaze Resistor

high-temperature resistant · good thermal dissipation · good discharge performance — 10 years of resistor experience · factory direct · focused onQuality
Product Series
RX20 / RXG20 / ZG11 Glazed Enamel Resistor
Power Range
8W ~ 500W
Surface Finish
Eco-friendly lead-free glaze · high-temperature / moisture / corrosion resistant
Tube Material
75-grade ceramic tube · high strength · good electrical performance
Wirewound
High-quality alloy wire · uniformly flat-wound (reduces parasitic inductance)
terminal post
Tin-plated copper · low hardness · excellent conductivity · minimizes energy loss
Surface Temperature Rise
≤ +275°C (derates to 0% at 315°C)
Solderability
≥ 95% (235±5℃ · 2±0.5s)
Available styles
Glazed / adjustable / With Bracket
Typical Applications
Electrical Equipment / Electronic Instruments — Used in DC or low-frequency AC circuits for voltage drop, voltage division, current sharing or load purposes
Factory directFree samples in 48hCustom to drawing12-month warranty
Product Highlight

Factory Direct · RX20 / ZG11 Glazed Resistor

high-temperature resistant · good thermal dissipation · good discharge performance — 10 years of resistor experience · factory direct · focused onQuality

Eco-friendly lead-free glaze surface · excellent tri-proof
Eco-Friendly Lead-Free Glaze

Eco-friendly lead-free glaze surface · excellent tri-proof

Surface treated with eco-friendly lead-free glaze, providing excellent tri-proof (high-temperature, moisture and corrosion resistance) performance; good discharge performance / thermal performanceSuddenOut, operates in high temperatureharsh environmentsbelowlong-term stableOperating.

Multiple specs available — Glazed / adjustable / With Bracket
Multiple Configurations

Multiple specs available — Glazed / adjustable / With Bracket

The the the same series simultaneously offers Glazed, adjustable and With-Bracket variants in a full range of Sizes; over 10 years of resistor design and manufacturing experience, factory-direct, quality-focused, with custom non-standard parts supported.

Dimensions

Dimensions (mm)
ModelRated Power (W)L (mm)D (mm)d (mm)H (mm)h (mm)L1 (mm)K (mm)b (mm)t (mm)d1 (mm)C (mm)Weight · Standard (g)Weight·Tstyle (g)
RX20(T)835±1.514±25.5±0.53128.5±2.56±23.5±0.84.528±1523
RX20(T)1041±1.514±25.5±0.53128.5±2.5206±23.5±0.84.528±152734
RX20(T)1645±1.517±28±0.53431±2.5236±23.5±0.84.528±153642
RX20(T)2051±217±28±0.53431±2.5306±23.5±0.84.528±154452
RX20(T)2551±217±28±0.53431±2.5306±23.5±0.84.528±155767
RX20(T)3071±2.221±2.512±0.83935±2.5446±23.5±0.84.528±158090
RX20(T)4087±2.221±2.512±0.83935±2.5576±23.5±0.84.528±1598110
RX20(T)5091±2.421±2.512±0.83935±2.5606±23.5±0.84.528±15132144
RX20(T)75140±3.229±320±1.14743±31107±24.5±162.58±15253265
RX20(T)100170±3.529±320±1.14743±31407±24.5±162.58±15286298
RX20(T)150215±429±320±1.14743±31857±24.5±162.58±15385397
RXG20(T)200200±242±325±0.760.5±1.258±2160⁺³₋₂7±28±184.511±15475495
RXG20(T)200/250266±230±216±0.350±247±2210⁺³₋₂7±28±184.511±15510530
RXG20(T)300266±236±220±0.358±258±2210⁺³₋₂8±28±184.511±15630650
RXG20(T)400250±254±230±276.5±1.579±2180⁺³₋₂10±28±184.511±1510001020
RXG20(T)500300±254±230±276.5±1.579±2230⁺³₋₂10±28±116817±1513401360

Derating Curve

Power Derating Curve
020406080100120Rated Power Ratio (%)-60-300306090120150180210240270300330Ambient Temperature (°C)-55℃70℃315℃

Electrical Characteristics

Testing Method & Condition
Test Item Test ItemPerformance Requirement RequirementTest Method
Solderability≥ 95%235±5℃ · 2±0.5s
Lead Strengthno mechanical damage20N · 30S
Steady-State Humidity≤ ±(2%R + 0.05Ω)40±2℃ · RH 93±3%
Vibration≤ ±(1%R + 0.05Ω)10–1000 Hz · 0.75 mm · 200 m/S²
Bump≤ ±(1%R + 0.05Ω)40–80 cycles/min
Surface Temperature Rise Surface Temp Rise≤ +275℃Pa (rated power)
Endurance at 70°C≤ ±(5%R + 0.05Ω)70℃ · Pa · 1000h
Overload≤ ±(1%R + 0.05Ω)10Pa · 5S
Trusted Manufacturer · Four Key Advantages

48-Hour Free Samples

Free samples for standard parts — shipped within 2 business days.

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Custom to Drawing

Drawing- and spec-based customization. Engineer responds within 24 hours.

$

Volume Discounts

Factory-direct supply at scale — direct manufacturer pricing.

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Worry-Free After-Sales

12-month warranty with a dedicated team for technical issues.

Customization Process

Made-to-Ordertailored to your needs

Contact Us

Reach out, learn about our products, share your needs

Specify Requirements

Discuss specifications with our team

Get a Quote

We send pricing and proposal

Place Order

Confirm order and payment

Production

Manufacturing and quality inspection

Ship

Pack and ship the goods

Delivery

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Frequently asked questions

Is a free sample available for this product?
Yes — free samples in reasonable quantities for engineering evaluation, shipped within 2–3 business days. Submit the request via the inquiry form on this page or click 'Request Sample' above. We typically include 5–10 pieces and a printed datasheet.
What is the minimum order quantity?
Standard MOQ is 1,000 pieces. For higher-power product families (resistor cabinets, large aluminum-housed units) MOQ may be lower or per-order. Annual contract pricing available for forecasted volumes — tell us your projected annual usage during the quote stage.
How long is the warranty?
12-month standard warranty from date of shipment, covering defects in materials and workmanship under specified operating conditions (within rated power, ambient ≤70°C, mounting per datasheet). Custom and high-reliability variants can have extended warranty terms specified in the contract.
What payment terms do you accept?
T/T (wire transfer) is most common: 30% advance, 70% before shipment for new customers; net 30 / net 60 for established customers. Letter of Credit (L/C at sight or with usance) accepted for orders >$50,000 USD. PayPal accepted for sample-only orders under $1,000.
Can I order this product in custom dimensions or values?
Yes. Custom resistance values within the platform's range carry no extra cost (just specify in the order). Custom dimensions, mounting holes, terminations or non-standard packages may incur a one-time tooling fee (typically waived for orders >5,000 pieces). See the Customization page or submit drawings via the inquiry form.
How do I get a datasheet or 3D model?
Email info@resistor-factory.cn with the part number — we send PDF datasheet (English) and STEP/IGES 3D model where available, typically within 1 business day. Free, no NDA required for standard products. For custom variants, the model is delivered after the design review meeting.
Sample Request

Sample Request

Standard samples are provided free of charge in reasonable quantities (shipped within 2–3 business days). Custom samples are delivered within 2–4 weeks. Please use the form on the right to tell us:

  • Company and contact details
  • Target part number or key specs (power / resistance / package)
  • Application scenario and estimated annual volume
  • Shipping address and expected delivery date
📧 You can also email us directly at info@resistor-factory.cn / 13650089870
Inquiry

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PDF / STEP / DWG / ZIP / image — up to 3 files, 5 MB each

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