Excel Earthings
SPT12.5-275/3(S)+1
SPT12.5-275/3(S)+1
Internal Configuration
Internal Configuration
Connection Diagram
Connection Diagram
  • For lightning current Equipotential Bonding in accordance with IEC 62305
  • Lightning Current Arresting capacity of 12.5kA (10/350 µs) per pole and up to 50kA (10/350 µs) in total
  • Modular, plug-in arrester with cut-off unit and visual status display
  • Locking mechanism with vibration protection and voltage keying
  • Have potential-free changeover contact for remote signaling
Model No: SPT12.5-275/3(S)+1     275
IEC Electrical
Nominal AC Voltage (50/60Hz)     230 V
Maximum Continuous Operating Voltage (L - N) Uc 275 V
(N - PE) Uc 255 V
Nominal Discharge Current (8/20 μs) (L - N) / (N - PE) In 20 kA/50kA
Maximum Discharge Current (8/20 μs) (L - N) / (N - PE) Imax 50kA/100kA
Impulse Discharge Current (10/350 μs) (L - N) / (N - PE) Iimp 12.5kA/50kA
Total Discharge Current (10/350 μs)   Itotal 50kA/100kA
Specific Energy (L - N) / (N - PE) W/R 39 kJ / Ω / 625 kJ / Ω
Charge (L - N) / (N - PE) Q 6.25As / 25As
Voltage Protection Level (L - N) / (N - PE) Up 1600 V/1500 V
Follow Current Interrupt Rating (N - PE) Ifi 100 ARMS
Response Time (L - N) / (N - PE) tA <25ns>
Back-Up Fuse (max)     315 A / 250 A gG
Short-Circuit Current Rating (AC) (L - N) ISCCR 25 kA / 50 kA
TOV Withstand 5s (L - N) UT 335 V
TOV 120min (L - N) UT 440 V
Mode Safe Fail
TOV Withstand 200ms (N - PE) UT 1200 V
Number of Ports     1

 

UL Electrical
Maximum Continuous Operating Voltage (AC) (L - N) / (N - PE) MCOV 320V/255V
Volatage Protection Rating (L - N) / (N - PE) VPR 1200V/1200V
Nominal Discharge Current (8/20 μs) (L - N) / (N - PE) In 20kA/20kA
Short-Circuit Current Rating (AC) (L - N) ISCCR 150kA

 

Mechanical & Environmental
Terminal Screw Torque   Mmax 39.9 lbf.in [4.5 Nm]
Conductor Cross Section (max)     2 AWG (Solid, Stranded)/ 4 AWG (Flexible)
    35 mm2 (Solid, Stranded) / 25 mm2(Flexible)
Mounting     35 mm DIN Rail, EN 60715
Degree of Protection     IP 20 (built-in)
Housing Material     Thermoplastic: Extinguishing Degree UL 94 V-0
Thermal Protection     Yes
Operating State / Fault Indication     Green (ok) / Red (defect)
RC Switching Capacity     AC:250V/0.5 A; DC:250V/0.1A; 125 V/0.2 A; 75 V/0.5A
RC Conductor Cross Section (max)     16 AWG (Solid) / 1.5 mm2 (Solid)
IEC – EN Category     Class I+ II, Type I+II, Class 1CA
Compliance     IEC 61643-11:2011
EN 61643-11:2012
UL 1449 4th Edition
Location of Use     Main Distribution Boards
Network Systems     TT, TN-S
Mode of Protection     N-PE, L-N
Surge Ratings     Iimp = 12.5 kA (10/350 μs)
In = 20 kA (8/20 μs)
Protective Elements     High Energy MOV and GDT
Housing     Pluggable Design
  • CE
  • RoHS

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