Marley Thermal Cutout Fuse 4520-2030-000 Qmark, Berko Parts
- Part # 4520-2030-000
- Fuse
- Fits 112 models
Marley 4520-2030-000 one-time thermal cutoff fuse rated 144°C for Marley and Qmark electric heaters.
$19.00
if ordered in the next
In stock
- Genuine OEMFactory original part
- Same-Day ShippingIn-stock orders by 4 PM Central
- 90-Day ReturnsSee return policy
- Expert Support800-654-3545Mon–Fri, 8 AM–5 PM Central
Compatible Models
The Marley 4520-2030-000 fits 112 models. Type your model number to check.
Don’t see your model? This list may not include every model this part fits. Call 800-654-3545 or email [email protected]Call 800-654-3545, email [email protected], or and we’ll check compatibility for you.
- Marley C1012IFAA
- Marley C1012IFAB
- Marley C1012T2AA
- Marley C1012T2AB
- Marley C1024IFAB
- Marley C1024T2AB
- Marley C1512IFAA
- Marley C1512IFAB
- Marley C1512IFB
- Marley C1512IFC
- Marley C1512T2AA
- Marley C1512T2AB
- Marley C1512T2B
- Marley C1512T2C
- Marley C1524IFAB
- Marley C1524T2AB
- Marley C2024IFAB
- Marley C2024IFB
- Marley C2024IFC
- Marley C2024T2AB
- Marley C2024T2B
- Marley C2024T2C
- Marley C2028IFB
- Marley C2028IFC
- Marley C2224IFB
- Marley C2224IFC
- Marley C2224T2B
- Marley C2224T2C
- Marley CWH1101DSA
- Marley CWH1151DSA
- Marley CWH1157DSA
- Marley CWH1201DSA
- Marley CWH1202DSA
- Marley CWH1207DSA
- Marley CWH1208DSA
- Marley MCARWH
- Marley MCARWH1802
- Marley MCARWH1802AL
- Marley MCARWH1802BZ
- Marley MCARWH1802W
- Marley MCARWH4804
- Marley MCARWH4804AL
- Marley MCARWH4804BZ
- Marley MCARWH4804W
- Marley MCARWH4807
- Marley MCARWH4807AL
- Marley MCARWH4807BZ
- Marley MCARWH4807W
- Marley MCARWH4808
- Marley MCARWH4808AL
- Marley MCARWH4808BZ
- Marley MCARWH4808W
- Marley S1100
- Marley S1100A
- Marley S1100B
- Marley S1100C
- Marley S1100CNW
- Marley S1104
- Marley S1104A
- Marley S1104B
- Marley S1104C
- Marley S1104CNW
- Marley S1500
- Marley S1500A
- Marley S1500B
- Marley S1500C
- Marley S1500T
- Marley S1500TA
- Marley S1500TB
- Marley S1500TC
- Marley S1500TCNW
- Marley S1504
- Marley S1504A
- Marley S1504B
- Marley S1504C
- Marley S1504T
- Marley S1504TA
- Marley S1504TB
- Marley S1504TC
- Marley S1504TCNW
- Marley SRA1012DSC
- Marley SRA1512DSC
- Marley SRA1527DSC
- Marley SRA1812DSC
- Marley SRA2020DSC
- Marley SRA2024DSC
- Marley SRA2027DSC
- Marley SWH1012AGA
- Marley SWH1012FC
- Marley SWH1512AGA
- Marley SWH1512FC
- Marley SWH1527AGA
- Marley SWH1527FC
- Marley SWH1812AGA
- Marley SWH1812FC
- Marley SWH2020AGA
- Marley SWH2020FC
- Marley SWH2024AGA
- Marley SWH2024FC
- Marley SWH2027AGA
- Marley SWH2027FC
- Marley WHB1101FC
- Marley WHB1151FC
- Marley WHB1157FC
- Marley WHB1201FC
- Marley WHB1202FC
- Marley WHB1207FC
- Marley WHB1208
- Marley WHB1208FC
- Dayton 2YV10
- Dayton 2YV11
- Marley SRA2024DSF
Product Details
| Part Number | 4520-2030-000 |
|---|---|
| Brand | Marley, Qmark, Berko |
| Part Type | Fuse |
| Manufacturer Description | THERMAL CUTOUT FUSE WILL NOT REPLACE OLD WITH |
| Condition | New — Genuine OEM |
| Trip Temperature | 144°C (291°F) |
| Reset Type | One-time (non-resettable) |
| Cross-Reference | Therm-O-Disc MicroTemp G4AP0205 |
| Listing | UL Listed |
| Compatible Models | 112 (see list) |
| Availability | In stock |
| Ships | Same business day if ordered by 4 PM Central |
| Returns | 90 days on new, unused items |
| SKU | Y4520-2030-000 |
About the Marley 4520-2030-000
The 4520-2030-000 is a one-time thermal cutoff fuse from Marley Engineered Products. It sits in line with the heater's heating circuit and opens permanently if the temperature reaches 144°C (about 291°F), cutting power to protect the heater from overheating. Unlike an automatic-reset limit, it does not reset after it cools and must be replaced once it trips.
A heater that suddenly goes completely dead may have an open thermal fuse. Find out why it overheated, for example a blocked airflow path or a failed fan, before putting the heater back in service.
Confirm your model number against the compatible-models list on this page before ordering.
Installation Tips
Turn off power at the breaker and let the heater cool. Test the old fuse for continuity to confirm it is open, then install the new one in the same location and connect it the same way. Never bypass the fuse, even temporarily, and correct whatever caused the overheating before restoring power.
Why Buy From Carroll Parts?
- Helping Fix Things Since 1938Over 85 years of parts expertise
- Same-Day ShippingIn-stock orders placed by 4 PM Central ship the same business day
- 90-Day Return PolicyBuy with confidence
- Real Parts Experts800-654-3545 · Mon–Fri, 8 AM–5 PM Central
Frequently Asked Questions
Can the 4520-2030-000 thermal fuse be reset after it trips?
No. It is a one-time fuse that opens permanently. Once it trips, it has to be replaced.
Will the Marley 4520-2030-000 fit my heater?
It fits the 112 models listed under Compatible Models on this page. If your model isn’t listed, call us at 800-654-3545 and we’ll check for you.
Is the Marley 4520-2030-000 a genuine OEM part?
Yes. This is a genuine Marley factory replacement part, not an aftermarket copy.
When will my order ship?
In-stock orders placed by 4 PM Central ship the same business day.
What is your return policy?
Items must be new and unused. You can return them within 90 days. Please read our return policy before sending anything back. Questions about a return? Call 800-654-3545 or email [email protected], Mon–Fri, 8 AM–5 PM Central.
