Description
Littelfuse PSX series 1500 V dc high-speed square body
fuses are specially designed to protect battery energy
storage systems (BESS), photovoltaic inverters, and many
dc applications such as dc common bus systems, larger
industrial regenerative drives, rectifiers and metal processing
equipment.
The PSX series fuses are extremely fast-acting, offering
high-speed performance up to 1500 V dc, ranging from
80 A to 1400 A in the smallest NH XL package sizes. The
PSX series is available with multiple mounting terminations
including flush-end, DIN, and bolted-blade styles. Visual
blown fuse indication is standard on all fuses and optional
micro-switch is available for external indication.
The PSX series is certified to UL248-13 and designed to
meet IEC 60269-7 (Class aBat) battery protection fuse
standard.

Features/Benefits
 High dc voltage rating up to 1500 V dc
 Dc interrupting rating is 250 kA
 Extremely fast acting for high speed performance
 Low watt loss provides energy efficiency for BESS
applications
 Compact NH 1XL and 3XL sizes offer flexibility

Applications
 Battery energy storage systems (BESSs)
 Power conversion systems
 Dc common bus systems
 Hybrid PV-BESS inverters
 Regenerative drives
 Industrial heaters and welding equipment
 Metal processing equipment

Specifications
Voltage Rating Dc: 1500 V
Amperage Rating 80 A–1400 A
Interrupting Rating Dc: 250 kA
Time Constant 1XL: 3XL: Microswitch Yes
Mounting Bolted-blade style, DIN-blade style,
Metric flush-end style
Material Body: ceramic
Contacts: plated copper (bladed)
plated brass (flush end)
Approvals cURus Recognized (File: E71611)
Applicable Standards UL 248-13, IEC 60269-7
Environmental RoHS Compliant, REACH
Operating Temperature -55 °C to +125 °C
Storage Temperature Up to +35 °C with relative humidity <65 %
Country of Origin Mexico