Mersen PC73UD13C400D1A / C300566 Protistor Size 73 aR Semiconductor Protection Fuse, 400A, 1250VAC (IEC) / 1300VAC (UL), DIN110 Blade Terminals

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The Mersen PC73UD13C400D1A is a Protistor® Size 73 aR ultra-fast acting square body semiconductor protection fuse-link rated at 400 A and 1250 VAC (IEC) / 1300 VAC (UL). Fitted with DIN110 blade-style terminals, it delivers a very low pre-arcing I²t of 25 kA²s for state-of-the-art protection of diodes, thyristors, and IGBT devices in high-voltage power conversion equipment. UL/CSA Recognized (E76491) and IEC 60269-4 compliant.

Product ID (MPN)	PC73UD13C400D1A
Item Number	C300566
Brand	Mersen
Series	Protistor® Size 73
Product Type	Semiconductor Protection Fuse-Link, Square Body, High-Speed AC
Speed / Characteristic	aR (Ultra-Fast Acting, Current Limiting)
Rated Current (In)	400 A
Rated Voltage AC — IEC	1250 V
Rated Voltage AC — UL	1300 V
Rated Breaking Capacity AC	126 kA
Pre-Arcing I²t	25 kA²s
Clearing I²t at Rated Voltage	205 kA²s
Power Dissipation at In	93 W
Terminal Type	DIN110 Blade (Drawing Ref: 105714)
Body Size	73 (Square Body)
Body Dimensions (W × W)	73 ± 1.4 mm × 73 ± 1.4 mm
Body Depth	78.5 mm
Overall Length (incl. blades)	133.4 +2.5/−1.1 mm
Blade-to-Blade Inner Length	100.4 +2.3/−0.9 mm
Blade Width	40 mm
Blade Slot Width / Spacing	6 mm slot; 31.2 mm centre spacing
Contact Surface	Silver Plated; Non-Magnetic Hardware
Trip Indicator	Low Voltage Trip-Indicator compatible; Field-Mountable Microswitch optional
Weight	1.12 kg
Package Quantity	1
UL/CSA Certification	UL/CSA Recognized — E76491 ✓
Standards	IEC 60269-4; VDE 636-23 (aR Class); CCC GB 13539.4 (Asia); CE Marking (≤1000 VAC)
Applications	Protection of Inverters, Motor Drives, UPS Systems; Diodes, Thyristors, IGBT Devices; ≤690 V Equipment
Datasheet Reference	DS-PFC67AB73-17-1224_EN

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