Technical Parameters Parameter Specification / Value Standard Compliance IEC/EN 61643-11 Protection Type Type 1 + Type 2 Combined (Class I + II) System Configuration 400 V AC, 3P+N (TN-S, TT, TN-C-S systems) Rated Voltage (Un) 400 V AC (±10%) Maximum Continuous Voltage (Uc) 255 V AC (L-N) / 320 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 25 kA (per mode) Nominal Discharge Current (In) 8/20 µs 17.5 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 40 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.0 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand According to IEC 61643-11 Recommended Backup Protection 100A gL/gG fuse (consult installation manual for exact rating) Connection Terminals Line/Neutral: 16-50 mm² Earth/PE: 25-50 mm² (copper) Auxiliary Contacts Not standard (optional accessory may be available) Protection Degree IP20 (for indoor enclosure mounting) Operating Temperature -40°C to +80°C Storage Temperature -40°C to +85°C Status Indication Visual window with color flag (green/red) Mounting DIN-rail (35 mm) Dimensions (H×W×D) ~ 288 × 72 × 62 mm (confirm with official datasheet) Weight Approximately 2.2 kg Model Interpretation PST: Product series 175: Discharge capacity (17.5 kA In) 600: Iimp = 25 kA 70: Configuration code

Technical Parameters Parameter Specification / Value Standards Compliance IEC/EN 61643-11 Protection Classification Type 1 + Type 2 Combined (Class I + II) System Configuration 400 V AC, 3P+N (TN-S, TT systems) Rated Voltage (Un) 400 V AC (±10%) Maximum Continuous Voltage (Uc) 320 V AC (L-N) / 420 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 25 kA (per mode, all poles) Nominal Discharge Current (In) 8/20 µs 14 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 30 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.2 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand Capacity 25 kA RMS (per IEC 61643-11) Recommended Backup Protection 80A-100A gL/gG fuse or equivalent circuit breaker (consult installation manual) Connection Terminals Line/Neutral: 16-70 mm² Earth/PE: 25-70 mm² (copper) Auxiliary Contacts Optional 1 changeover contact (remote signaling) Housing Protection IP20 (for indoor cabinet installation) Operating Temperature -40°C to +80°C Storage Temperature -40°C to +85°C Status Indication Visual window with color-coded flag (green/red) Mounting DIN-rail mountable (35 mm) Dimensions (H×W×D) ~ 288 × 90 × 75 mm (confirm with official datasheet) Weight Approximately 2.8 kg Model Interpretation PSTX: Premium series 142: Product variant (14 kA In) 600: Iimp = 25 kA 70: Generation/configuration code

Technical Parameters Parameter Specification / Value Standards Compliance IEC/EN 61643-11 Ed.3, IEC 61643-31, IEC 60099-8, IEEE C62.72, UL 1449 4th Ed. Protection Classification Type 1 + Type 2 Combined (Class 0 + I + II) System Configuration 690 V AC, 3P+N+PE (TN-S, IT, TT systems with mega-current capacity) Rated Voltage (Un) 690 V AC (+10%/-15%) Maximum Continuous Voltage (Uc) 510 V AC (L-N) / 880 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 40 kA (per mode, all poles) Nominal Discharge Current (In) 8/20 µs 84 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 150 kA (per mode) Voltage Protection Level (Up) @ In ≤ 3.8 kV (Line-Neutral) Total Discharge Capacity >220 kJ per phase Response Time < 10 ns (primary quantum clamping stage) Follow Current Interruption < 1.5 ms (multi-chamber spark gap recovery) Short-Circuit Withstand 100 kA RMS (1 second) Recommended Backup Protection 500A-630A gL/gG fuse or equivalent ACB (see quantum installation manual) Connection Terminals Line/Neutral: 95-240 mm² Earth/PE: 120-240 mm² (copper/copper-clad aluminum) Auxiliary Contacts 4 independent quantum changeover contacts (10A/600V AC) Housing Protection IP20 / NEMA 3R (indoor/outdoor cabinet with anti-corrosion coating) Operating Temperature -50°C to +90°C (full military-grade performance range) Storage Temperature -55°C to +95°C Altitude Rating Up to 6000 m without derating Relative Humidity 0-100% (condensing conditions acceptable) Seismic Rating IEEE 693 (High Level) - 1.0g horizontal, 0.8g vertical Status Indication Quantum tri-color adaptive indicator with predictive analytics and remote cloud signaling Mounting Seismic-rated heavy-duty DIN-rail (45/75 mm) or direct panel mounting with harmonic dampeners Dimensions (H×W×D) ~ 480 × 155 × 125 mm (verify with official quantum datasheet) Weight Approximately 8.5 kg Model Decoding PSTX: Premium surge protection series 840: Discharge capacity (84 kA In) 690: Voltage class 70: Quantum generation variant

Technical Parameters Parameter Specification / Value Standards Compliance IEC/EN 61643-11, IEC 61643-31, IEC 60099-4, IEEE C62.41 Protection Classification Type 1 + Type 2 Combined (Class I + II) System Configuration 690 V AC, 3P+N+PE (TN-S, IT, TT systems) Rated Voltage (Un) 690 V AC (±10%) Maximum Continuous Voltage (Uc) 480 V AC (L-N) / 830 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 35 kA (per mode, all poles) Nominal Discharge Current (In) 8/20 µs 72 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 120 kA (per mode) Voltage Protection Level (Up) @ In ≤ 3.5 kV (Line-Neutral) Total Discharge Capacity >150 kJ per phase Response Time < 15 ns (primary clamping stage) Follow Current Interruption < 2 ms (spark gap recovery) Short-Circuit Withstand 80 kA RMS (1 second) Recommended Backup Protection 315A-400A gL/gG fuse or equivalent MCCB (see installation manual) Connection Terminals Line/Neutral: 70-185 mm² Earth/PE: 95-185 mm² (copper) Auxiliary Contacts 2 independent changeover contacts (5A/250V AC) Housing Protection IP20 / NEMA 1 (indoor cabinet installation) Operating Temperature -45°C to +85°C (full performance range) Storage Temperature -50°C to +90°C Altitude Rating Up to 5000 m without derating Relative Humidity 5-95% (non-condensing) Status Indication Tri-color visual indicator (green/amber/red) with remote contact signaling Mounting Heavy-duty DIN-rail (35/45 mm) or direct panel mounting with anti-vibration mounts Dimensions (H×W×D) ~ 420 × 135 × 105 mm (verify with official datasheet) Weight Approximately 6.2 kg Model Decoding PSTX: Premium surge protection series 720: Discharge capacity (72 kA In) 690: Voltage class 70: Generation variant

Technical Parameters Parameter Specification / Value Standard Compliance IEC/EN 61643-11, IEC 61643-31, IEC 60099-4 Protection Classification Type 1 + Type 2 Combined (Class I + II) System Configuration 690 V AC, 3P+N+PE (TN-S, IT, TT systems compatible) Maximum Continuous Voltage (Uc) 460 V AC (L-N) / 800 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 30 kA (per mode, all poles) Nominal Discharge Current (In) 8/20 µs 57 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 100 kA (per mode) Voltage Protection Level (Up) @ In ≤ 3.2 kV (Line-Neutral) Response Time < 20 ns (primary clamping stage) Short-Circuit Withstand Capacity 65 kA RMS (1 second) Recommended Backup Protection 250A-315A gL/gG fuse or equivalent MCCB (specific ratings in installation manual) Connection Terminals Line/Neutral: 50-150 mm² Earth/PE: 70-150 mm² (copper or aluminum) Auxiliary Contacts 2 changeover contacts (NO/NC) for comprehensive remote monitoring Housing Protection IP20 / NEMA 1 (for enclosure installation) Operating Temperature Range -40°C to +85°C (full performance) Altitude Rating Up to 4000 m without derating Status Indication Multi-stage visual (green/yellow/red) + remote contact signaling + optional LED indicators Mounting Reinforced DIN-rail (35/45 mm) or direct panel mounting with vibration dampeners Dimensions (H×W×D) ~ 390 × 125 × 95 mm (confirm with official datasheet) Weight Approximately 4.5 kg Model Interpretation PSTX: Premium surge protection series 570: Discharge capacity platform (57 kA In) 690: System voltage class 70: Generation/configuration code

Technical Parameters Parameter Specification / Value Standard Compliance IEC/EN 61643-11, IEC 61643-31 Protection Classification Type 1 + Type 2 Combined (Class I + II) System Configuration 690 V AC, 3P+N (TN-S, TT systems) Maximum Continuous Voltage (Uc) 440 V AC (L-N) / 760 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 25 kA (per mode) Nominal Discharge Current (In) 8/20 µs 47 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 80 kA (per mode) Voltage Protection Level (Up) @ In ≤ 3.0 kV (Line-Neutral) Response Time < 25 ns (varistor stage) Short-Circuit Withstand Capacity 50 kA (IEC 61643-11 compliant) Recommended Backup Protection 200A gL/gG fuse or equivalent circuit breaker (consult installation manual) Connection Terminals Line/Neutral: 35-120 mm² Earth/PE: 50-120 mm² Auxiliary Contacts 1 changeover contact (NO/NC) for remote monitoring Housing Protection IP20 (for indoor cabinet installation) Operating Temperature Range -40°C to +80°C Status Indication Multi-color visual indicator + remote contact signaling Mounting DIN-rail (35 mm) or direct panel mounting Dimensions (H×W×D) ~ 360 × 110 × 85 mm (confirm with official datasheet) Model Decoding PSTX: Premium series 470: Product platform (47 kA In) 690: Voltage rating 70: Configuration variant

Technical Parameters Parameter Specification / Value Standard Compliance IEC/EN 61643-11 Protection Classification Type 1 + Type 2 Combined (Class I + II) System Configuration 690 V AC, 3P+N (50/60 Hz) Maximum Continuous Voltage (Uc) 420 V AC (L-N) / 730 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 25 kA (per mode) Nominal Discharge Current (In) 8/20 µs 37 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 70 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.8 kV (Line-Neutral) Response Time < 25 ns (varistor stage) Short-Circuit Withstand 25 kA RMS (typical) Recommended Backup Protection 160A gL/gG fuse or equivalent circuit breaker (verify with installation manual) Connection Capacity Line/Neutral: 25-95 mm² Earth/PE: 35-95 mm² Auxiliary Contacts 1 NO + 1 NC changeover contact (for remote monitoring) Housing Protection IP20 (requires enclosure installation) Operating Temperature -40°C to +80°C Status Indication Visual window (green/red) + remote signaling capability Mounting DIN-rail (35 mm) or direct panel mount Dimensions (H×W×D) ~ 288 × 90 × 75 mm (confirm with datasheet) Model Interpretation PSTX: Series 370: Platform code (420V Uc) 690: Voltage class 70: Discharge current code (37 kA In)

Technical Parameters Parameter Specification / Value Application Standard IEC/EN 61643-11 Protection Type / Class Type 1 + Type 2 Combined (Class I + II) Rated System Voltage 690 V AC, 3P+N (50/60 Hz) Maximum Continuous Operating Voltage (Uc) 440 V AC (Line-Neutral) / 750 V AC (Line-Line) Impulse Discharge Current (Iimp) 10/350 µs 25 kA (per pole, L/N) Nominal Discharge Current (In) 8/20 µs 30 kA (per pole) Maximum Discharge Current (Imax) 8/20 µs 60 kA (per pole) Voltage Protection Level (Up) @ In ≤ 3.0 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand Rating (SCCR) High - According to IEC 61643-11 Back-up Fuse/Circuit Breaker Mandatory. Typically 125A-160A gL/gG (Consult ABB installation manual for exact rating). Connection Cross-Section Line & Neutral: 25 - 95 mm² (copper) Earth/PE: 35 - 95 mm² (copper) Remote Signaling Optional auxiliary contact for remote status monitoring. Housing Material High-strength thermoplastic (UL94 V-0) Protection Degree (IP) IP20 (for enclosure mounting) Operating Temperature Range -40 °C to +80 °C Status Indication Visual (color flag: green=OK, red=fault) + Optional remote contact Mounting DIN-rail mountable (35 mm) Dimensions (H×W×D) Approx. 288 mm × 90 mm × 75 mm (Confirm with official datasheet) Model Decode PSTX: Premium Series 300: Product variant / Uc rating 690: Rated for 690V systems 70: Nominal discharge current 30 kA

Technical Parameters Parameter Specification / Value Application Standard IEC/EN 61643-11 Protection Type / Class Type 1 + Type 2 Combined (Class I + II) Rated System Voltage 400 V AC, 3P+N (50/60 Hz) Maximum Continuous Operating Voltage (Uc) 440 V AC (Line-Neutral) / 520 V AC (Line-Line) Impulse Discharge Current (Iimp) 10/350 µs 60 kA (per pole, L/N) Nominal Discharge Current (In) 8/20 µs 125 kA (per pole) Maximum Discharge Current (Imax) 8/20 µs 200 kA (per pole) Voltage Protection Level (Up) @ In ≤ 2.8 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand Rating (SCCR) Very High - According to IEC 61643-11, typically requires 250-400A upstream protection (consult datasheet) Back-up Fuse/Circuit Breaker Mandatory. Typically 250A-400A gL/gG or equivalent circuit breaker (Must use ABB-specified ratings from installation manual). Connection Cross-Section Line & Neutral: 50 - 185 mm² (copper) Earth/PE: 70 - 185 mm² (copper) Remote Signaling Optional auxiliary contact (changeover) for remote monitoring of status. Housing Material High-strength thermoplastic or thermoset (UL94 V-0) Protection Degree (IP) IP20 (for enclosure mounting) Operating Temperature Range -40 °C to +80 °C Status Indication Visual (color flag) + Optional remote contact Mounting Robust DIN-rail or direct panel mounting Dimensions (H×W×D) Approx. >350 mm × 110 mm × 90 mm (Large format - confirm with official datasheet) Model Decode PSTX: Premium High-Capacity Series 1250: In = 125 kA (8/20µs) 600: Iimp = 60 kA (10/350µs) 70: Version/Configuration Code

Technical Parameters Parameter Specification / Value Application Standard IEC/EN 61643-11 Protection Type Type 1 + Type 2 Combined (Class I + II) System Configuration 230 V AC, 1P+N (50/60 Hz) Maximum Continuous Voltage (Uc) 320 V AC (Line-Neutral) Impulse Discharge Current (Iimp) 10/350 µs 50 kA (L-PE, N-PE modes) Nominal Discharge Current (In) 8/20 µs 60 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 70 kA (per mode) Voltage Protection Level (Up) @ In ≤ 1.8 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand Compliant with IEC 61643-11 Back-up Protection Required - Typically 63A gL/gG fuse (Verify with local codes and ABB manual) Connection Cross-Section Line/Neutral: 6-35 mm² (copper) Earth: 10-35 mm² (copper) Housing Material Thermoplastic (UL94 V-0 rated) Protection Degree IP20 (requires enclosure mounting) Operating Temperature -40°C to +80°C Status Indication Visual window (Green=OK, Red=Fault) Mounting 35 mm DIN-rail Dimensions (H×W×D) Approx. 90 × 72 × 62 mm (Confirm with official datasheet) Model Code Breakdown PSE: Series 30: Variant (320V Uc, single-phase) 600: Iimp = 50 kA 70: In = 60 kA

Technical Parameters Parameter Specification / Value Application Standard IEC/EN 61643-11 Protection Type / Class Type 1 + Type 2 Combined (Class I + II) Rated System Voltage 230 V AC, 1P+N (50/60 Hz) Maximum Continuous Operating Voltage (Uc) 255 V AC (Line-Neutral) Impulse Discharge Current (Iimp) 10/350 µs 50 kA (per mode L-PE, N-PE) Nominal Discharge Current (In) 8/20 µs 60 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 70 kA (per mode) Voltage Protection Level (Up) @ In ≤ 1.5 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand Rating According to IEC 61643-11 Back-up Fuse Recommendation Required. Typically 63A gL/gG (Consult local regulations and ABB installation guide) Connection Cross-Section Line & Neutral: 6 - 35 mm² (copper) Earth/PE: 10 - 35 mm² (copper) Housing Material Thermoplastic (UL94 V-0) Protection Degree (IP) IP20 (for indoor installation in enclosure) Operating Temperature -40°C to +80°C Status Indication Visual window (Green = OK, Red = Fault) Mounting DIN-rail mountable (35 mm) Dimensions (H×W×D) Approx. 90 mm × 72 mm × 62 mm (Confirm with official datasheet) Model Decode PSE: Series 45: Product variant (single-phase, 255V Uc) 600: Iimp = 50 kA 70: In = 60 kA

Technical Parameters Parameter Specification / Value Application Standard IEC/EN 61643-11 Protection Type / Class Type 1 + Type 2 Combined (Class I + II) Rated System Voltage (Un) 400 V AC, 3P+N (50/60 Hz) Max. Continuous Operating Voltage (Uc) 255 V AC (Line-Neutral) / 320 V AC (Line-Line) Impulse Discharge Current (Iimp) 10/350 µs 60 kA (per pole, L/N) Nominal Discharge Current (In) 8/20 µs 70 kA (per pole) Maximum Discharge Current (Imax) 8/20 µs 100 kA (per pole) Voltage Protection Level (Up) @ In ≤ 1.8 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand Rating (SCCR) According to IEC 61643-11 Back-up Fuse Recommendation Required. Typically 125 A gL/gG (Must be verified with local regulations and ABB's installation manual). Connection Cross-Section Line & Neutral: 16 - 70 mm² (copper) Earth/PE: 25 - 70 mm² (copper) Housing Material Thermoplastic (UL94 V-0) Protection Degree (IP) IP20 (for indoor installation in a proper enclosure) Operating Temperature Range -40 °C to +80 °C Status Indication Visual window with color flag (Green = OK, Red = Fault/End-of-Life) Mounting DIN-rail mountable (35 mm) Dimensions (H x W x D) Approx. 288 mm x 90 mm x 75 mm (Confirm with official datasheet) Key Model Decode PSE: Series 250: Uc & Platform Code (255/320V) 600: Iimp = 60 kA 70: In = 70 kA