TDX50C277480 Compact TDX Panel Protector, 50 kA 277480 ,3 Ph , 4W+G


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  • Transient Discriminating (TD) Technology provides increased service life
  • Built-in features include TD Technology, thermal protection and short circuit current fusing
  • Compact NEMA®-4 enclosure design can be flush mounted or installed in a small space
  • LED status indication and voltage-free contacts provide remote status monitoring
  • 50kA 8/20μs maximum surge rating provides protection suitable for sub-distribution panels and a long operational life


Part Number TDX50C277480
Nominal System Voltage (Un) 277/480 V
Distribution System 3Ph 4W+G
Max Continuous Operating Voltage (Uc) 320/550 VAC
Stand-off Voltage 480/831 VAC
Frequency 50 – 60 Hz
Short Circuit Current Rating (SCCR) 200 kA
Nominal Discharge Current (In), IEC 40 kA 8/20 μs
Nominal Discharge Current (In), UL 10 kA 8/20 μs
Max Discharge Current (Imax), Per Phase 50 kA 8/20 μs
Voltage Protection Rating (VPR), L-N 1,200 V @ 3 kA
1,800 V @ 20 kA
Protection Modes L-N
Remote Contacts Yes
Status Indication LED
Surge Counter No
Technology Over-current fusing
TD technology with thermal disconnect
Lead Size 5.26 mm²
Lead Length 762 mm
Ground Lead Length 914 mm
Temperature -40 to 80 °C
Enclosure Material Metal
Enclosure Rating IP 65
Mounting 3/4” straight nipple
Depth (D) 78 mm
Height (H) 153 mm
Width (W) 84 mm
Unit Weight 0.7 kg
Certification Details UL® 1449 Edition 4 Type 1/2, 10 kA Mode
Complies With ANSI®/IEEE® C62.41.2-2002 Cat A, Cat B, Cat C
ANSI®/IEEE® C62.41.2-2002 Scenario II, Exposure 2, 50 kA 8/20 μs
IEC® 61643-1 Class I, Class II
Certifications CE, ERICO TDX
Standard Packaging Quantity 1 pc
UPC 78285659314
EAN-13 8711893121902



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