Bussmann MDQ-1/2 250V AC 0.5A MDQ Series Fuse
● LT: 8-12w250V AC 0.5A MDQ Series fuse, clearing I²t
Rated Current0.5A
Rated Voltage250V AC
Breaking Capacity100A @ 250V AC / 10000A @ 125V AC
Package1/4" x 1-1/4" (6.3×32mm) Glass
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Part NumberMDQ-1/2BrandEaton BussmannRequested Qty
Supplemental (UL 248-14) time-delay (td) fuse 0.5A 250V, 1/4″ x 1-1/4″ (6.3x32mm) Glass. Designed for battery chargers, power supplies, motor protection. 0.5W power loss. UL 248-14, CSA
Quick answer, specifications & FAQ
Direct answer
Eaton Bussmann Supplemental Fuse MDQ-1/2 is rated 0.5A, 250V AC, Time Delay, 1/4" x 1-1/4" (6.3×32mm) Glass. Breaking capacity 100A @ 250V AC / 10000A @ 125V AC, I²t N/A (Supplemental), operating temperature -40°C to +125°C, certifications UL Recognized|CE. Listed applications: Battery chargers, Motor protection, Power supplies. Standards: CSA C22.2 No. 248.14, UL 248-14. 250V AC 0.5A MDQ Series fuse, clearing I²t
Key specifications
- Part number: MDQ-1/2
- Brand: Eaton Bussmann
- Rated current: 0.5A
- Rated voltage: 250V AC
- Breaking capacity: 100A @ 250V AC / 10000A @ 125V AC
- Fuse speed: Time Delay
- Package size: 1/4" x 1-1/4" (6.3×32mm) Glass
- Dimensions: 1/4" x 1-1/4" (6.3×32mm) Glass
- Terminal type: Ferrule
- Operating temperature: -40°C to +125°C
- Certifications: UL Recognized|CE
- Standards: CSA C22.2 No. 248.14, UL 248-14
Frequently asked questions
What are the current and voltage ratings of MDQ-1/2?
MDQ-1/2 is rated 0.5A at 250V AC.
What is the breaking capacity of MDQ-1/2?
MDQ-1/2 has a breaking capacity of 100A @ 250V AC / 10000A @ 125V AC. Confirm this covers the available fault current at the installation point.
What package size does MDQ-1/2 use?
MDQ-1/2 uses 1/4" x 1-1/4" (6.3×32mm) Glass package size.
Which standards and approvals apply to MDQ-1/2?
MDQ-1/2 is listed under CSA C22.2 No. 248.14, UL 248-14 / UL Recognized|CE.
What is MDQ-1/2 used for?
MDQ-1/2 is listed for Battery chargers, Motor protection, Power supplies applications. Verify suitability for your circuit before ordering.
What are the ordering terms for MDQ-1/2?
MDQ-1/2: typical lead time 12-16 weeks, minimum order 10 pcs. Submit a quote request for a firm quotation.
Data sources
- Part number
- MDQ-1/2
- Brand
- Eaton Bussmann
- Last updated
- 2026-10-10
- Canonical URL
- https://fusestock.com/products/eaton-bussmann-mdq-1-2/
Technical Specifications
- Part Number
- MDQ-1/2
- Manufacturer Part Number
- MDQ-1/2
- Series
- MDQ Series (1/4"x1-1/4" Dual-Element Time-Delay)
- Fuse Type
- Supplemental Fuse
- Current Rating
- 0.5A
- Voltage Rating
- 250V AC
- AC / DC
- AC
- Breaking Capacity
- 100A @ 250V AC / 10000A @ 125V AC
- I²t
- N/A (Supplemental)
- Operating Temperature
- -40°C to +125°C
- Package / Dimensions
- 1/4" x 1-1/4" (6.3×32mm) Glass
- Mounting
- Fuse Holder
- Application
- Battery chargers · Motor protection · Power supplies
- Standard
- CSA C22.2 No. 248.14 · UL 248-14
- Terminal Type
- Ferrule
- Fuse Speed
- Time Delay
- Utilization Class
- Supplemental
- Approvals
- CE · UL Recognized
- Certifications
- UL Recognized|CE
- Reference Lead Time
- 12-16 weeks
- Minimum Order
- 10 pcs
- Sample Status
- Contact for Availability
- Pre-arcing I²t
- Clearing I²t: Watt Loss @ In: 0.5W
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