Littelfuse 326 Series 30A 125V time lag fuse – LOT OF 96

Product Description

Littelfuse 326 Series – 30A, 125V, Time Lag (Slo-Blo) Cartridge Fuse – 3AG Glass Body

A heavy-duty, time-delay cartridge fuse from Littelfuse’s renowned 326 Series, designed to withstand high inrush currents while providing reliable overcurrent protection. Rated 30A at 125V AC/DC, this 3AG (1/4″ × 1-1/4″) glass-bodied fuse is engineered for industrial controls, power supplies, motor circuits, and battery chargers requiring Slo-Blo® characteristics to avoid nuisance tripping.

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🔍 Key Specifications:

⚡ Electrical Ratings:

• Manufacturer: Littelfuse (industry leader in circuit protection)

• Series: 326 Series – time lag (Slo-Blo®) glass cartridge

• Current Rating: 30 Amps

• Voltage Rating: 125V AC / 125V DC

• Interrupting Rating: 1,000A @ 125V AC (typical)

• Characteristic: Time Lag / Slo-Blo – withstands temporary surge currents

📏 Physical Specifications:

• Size: 3AG (1/4″ × 1-1/4″ / 6.3mm × 32mm) – industry standard

• Body: Glass tube – allows visual inspection of fuse element

• End Caps: Nickel-plated brass – corrosion-resistant, reliable contact

• Indicators: None (standard glass body – element visible)

🌡️ Environmental:

• Operating Temperature: -55°C to +125°C

• RoHS Compliant: Yes (typical for 326 series)

• Agency Approvals: UL, CSA (verify by date code)

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⚙️ Why This Fuse is Exceptional:

⏱️ True Time Lag (Slo-Blo®) Design:
Unlike fast-acting fuses, the 326 Series features a thermal inertia element that:

• Withstands inrush currents up to 5× rated current for short durations

• Prevents nuisance blowing from motor starts, capacitor charging, transformer energization

• Delays response to transient surges while protecting against sustained overloads

🔋 High 30A Rating – Industrial Grade:

• Rare in 3AG form factor – most 3AG fuses top out at 15–20A

• Suitable for heavy-load branch circuits, battery isolators, power distribution

• 125V DC rating – valuable for solar, automotive, marine, and telecom DC systems

🧪 Visible Element – Instant Status Check:

• Clear glass body allows visual confirmation of fuse integrity

• No need for multimeter – blown element clearly visible

• Essential for field troubleshooting and rapid diagnostics

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🛠️ Applications & Uses:

🏭 Industrial Control Panels:

• Motor starter protection – small motors, fans, pumps

• Control transformer primary – inrush withstand

• PLC and relay power supplies – branch circuit protection

🔋 Power Supplies & Battery Systems:

• DC power supply outputs – 12V/24V/48V systems up to 30A

• Battery charger protection – absorb initial charging surge

• Inverter DC input – solar, RV, marine applications

• UPS battery banks – individual string protection

🔧 HVAC & Refrigeration:

• Compressor motor circuits – start-up surge tolerance

• Condenser fan motors – overload protection

• Control circuit protection – 120V HVAC controls

🚤 Marine & RV:

• DC distribution panels – 12V/24V lighting, appliance circuits

• Battery isolators – alternator to battery protection

• Inverter/charger inputs – AC side protection

⚡ Test Equipment & Lab Power:

• Variable AC power supplies – output protection

• Burn-in racks – individual load fusing

• Prototyping – temporary overcurrent protection

🔌 Replacement & Maintenance:

• Direct replacement for Littelfuse 326, 326P, 326P1 series

• Compatible with standard 3AG fuse holders and blocks

• Legacy equipment – restore vintage industrial electronics