Technical Parameters Parameter Specification / Value Standard Compliance IEC/EN 61643-11, IEC 61643-31, IEEE C62.41, UL 1449 4th Ed., IEC 60068 (environmental) Protection Classification Type 1 + Type 2 Combined (Class 0 + I + II) System Configuration 690 V AC, 3P+N+PE (TN-S, TT, IT systems) Rated Voltage (Un) 690 V AC (+10%/-15%) Maximum Continuous Voltage (Uc) 460 V AC (L-N) / 550 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 25 kA (per mode) Nominal Discharge Current (In) 8/20 µs 57.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 120 kA (per mode) Voltage Protection Level (Up) @ In ≤ 3.8 kV (Line-Neutral) Total Energy Absorption >180 kJ per phase Response Time < 100 ns (primary stage) Follow Current Interruption < 1.5 ms Short-Circuit Withstand 80 kA RMS (1 second) Recommended Backup Protection 500A gL/gG fuse or equivalent ACB (see installation manual) Connection Terminals Line/Neutral: 95-240 mm² Earth/PE: 120-240 mm² (copper/copper-clad aluminum) Insulation Coordination IEC 60664-1 Overvoltage Category IV, Pollution Degree 3 Auxiliary Contacts 3 independent changeover contacts (10A/600V AC) Communication Interface Optional MODBUS RTU/Profibus DP for integration Housing Protection IP20 / NEMA 3R (with corrosion protection coating) Operating Temperature -45°C to +90°C Storage Temperature -50°C to +95°C Altitude Rating Up to 5000 m without derating Seismic Rating IEEE 693 (High Level) - 1.0g horizontal Status Indication Multi-stage LED array + mechanical flag + remote contact + communication Mounting Seismic-rated heavy-duty rail (45/75 mm) or direct panel with dampeners Dimensions (H×W×D) ~ 480 × 140 × 110 mm (verify with official datasheet) Weight Approximately 7.5 kg Model Interpretation PSTB: Premium series 570: Discharge capacity (57 kA In) 690: Voltage class 70: Configuration generation

Technical Parameters Parameter Specification / Value Standard Compliance IEC/EN 61643-11, IEC 61643-31, IEEE C62.41, UL 1449 4th Edition Protection Classification 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) 350 V AC (L-N) / 440 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 25 kA (per mode) Nominal Discharge Current (In) 8/20 µs 57.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 120 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.7 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand 60 kA RMS (per IEC 61643-11) Recommended Backup Protection 400A gL/gG fuse or equivalent MCCB (consult installation manual) Connection Terminals Line/Neutral: 70-185 mm² Earth/PE: 95-185 mm² (copper) Auxiliary Contacts Standard 2 changeover contacts (NO/NC) for remote monitoring Housing Protection IP20 (for indoor enclosure mounting) Operating Temperature -40°C to +85°C Storage Temperature -40°C to +90°C Altitude Rating Up to 4000 m without derating Status Indication Multi-color LED + mechanical flag + remote contact signaling Mounting Heavy-duty DIN-rail (45 mm) or direct panel mounting with seismic brackets Dimensions (H×W×D) ~ 420 × 130 × 95 mm (confirm with official datasheet) Weight Approximately 5.8 kg Model Interpretation PSTB: Product series 570: Discharge capacity (57.0 kA In) 600: Iimp = 25 kA 70: Configuration variant

Technical Parameters Parameter Specification / Value Standard Compliance IEC/EN 61643-11, IEC 61643-31, IEEE C62.41 Protection Classification Type 1 + Type 2 Combined (Class I + II) System Configuration 690 V AC, 3P+N (TN-S, TT, IT systems) Rated Voltage (Un) 690 V AC (±10%) Maximum Continuous Voltage (Uc) 440 V AC (L-N) / 550 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 25 kA (per mode) Nominal Discharge Current (In) 8/20 µs 47.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 100 kA (per mode) Voltage Protection Level (Up) @ In ≤ 3.5 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand 50 kA RMS (per IEC 61643-11) Recommended Backup Protection 315A gL/gG fuse or equivalent circuit breaker (consult installation manual) Connection Terminals Line/Neutral: 70-185 mm² Earth/PE: 95-185 mm² (copper) Insulation Coordination Enhanced for 690V systems (clearance: ≥8.0mm, creepage: ≥16.0mm) Auxiliary Contacts Optional remote signaling contact (2 NO/NC changeover) Housing Protection IP20 / NEMA 1 (for indoor enclosure mounting) Operating Temperature -40°C to +85°C Storage Temperature -40°C to +90°C Altitude Rating Up to 4000 m without derating Status Indication Visual window with color flag (green=OK, red=fault) + optional remote signaling Mounting DIN-rail mountable (45 mm) or direct panel mounting with seismic brackets Dimensions (H×W×D) ~ 400 × 120 × 90 mm (confirm with official datasheet) Weight Approximately 5.2 kg Model Interpretation PSTB: Product series 470: Discharge capacity (47.0 kA In) 690: Voltage rating (690V system) 70: Configuration code

Technical Parameters Parameter Specification / Value Standard 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, TN-C-S 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) Nominal Discharge Current (In) 8/20 µs 47.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 100 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.5 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand According to IEC 61643-11 (typically 50 kA) Recommended Backup Protection 250A gL/gG fuse or equivalent circuit breaker (verify with installation manual) Connection Terminals Line/Neutral: 50-150 mm² Earth/PE: 70-150 mm² (copper) Auxiliary Contacts Optional remote signaling contact (1 NO/NC changeover) Housing Protection IP20 (for indoor enclosure mounting) Operating Temperature -40°C to +85°C Storage Temperature -40°C to +90°C Status Indication Visual window with color flag (green=OK, red=fault) + optional remote signaling Mounting DIN-rail mountable (35/45 mm) or direct panel mounting Dimensions (H×W×D) ~ 360 × 110 × 85 mm (confirm with official datasheet) Weight Approximately 4.5 kg Model Interpretation PSTB: Product series 470: Discharge capacity (47.0 kA In) 600: Iimp = 25 kA 70: Configuration variant

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) Rated Voltage (Un) 690 V AC (±10%) Maximum Continuous Voltage (Uc) 420 V AC (L-N) / 520 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 25 kA (per mode) Nominal Discharge Current (In) 8/20 µs 39.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 80 kA (per mode) Voltage Protection Level (Up) @ In ≤ 3.2 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand According to IEC 61643-11 (typically 50 kA) Recommended Backup Protection 250A gL/gG fuse or equivalent circuit breaker (consult installation manual) Connection Terminals Line/Neutral: 50-150 mm² Earth/PE: 70-150 mm² (copper) Insulation Coordination Enhanced for 690V systems (clearance: ≥6.0mm, creepage: ≥14.0mm) Auxiliary Contacts Optional remote signaling contact (1 NO/NC changeover) Housing Protection IP20 / NEMA 1 (for indoor enclosure mounting) Operating Temperature -40°C to +85°C Storage Temperature -40°C to +90°C Status Indication Visual window with color flag (green=OK, red=fault) + optional remote signaling Mounting DIN-rail mountable (35/45 mm) or direct panel mounting Dimensions (H×W×D) ~ 360 × 110 × 85 mm (confirm with official datasheet) Weight Approximately 4.2 kg Model Interpretation PSTB: Product series 390: Discharge capacity (39.0 kA In) 690: Voltage rating (690V system) 70: Configuration code

Technical Parameters Parameter Specification / Value Standard 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, 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 30.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 70 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.4 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand According to IEC 61643-11 (typically 40 kA) Recommended Backup Protection 200A gL/gG fuse or equivalent circuit breaker (verify with installation manual) Connection Terminals Line/Neutral: 35-120 mm² Earth/PE: 50-120 mm² (copper) Auxiliary Contacts Optional remote signaling contact (1 NO/NC changeover) available Housing Protection 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=OK, red=fault) + optional remote signaling Mounting DIN-rail mountable (35 mm) or direct panel mounting Dimensions (H×W×D) ~ 360 × 110 × 85 mm (confirm with official datasheet) Weight Approximately 3.8 kg Model Interpretation PSTB: Product series 300: Discharge capacity (30.0 kA In) 600: Iimp = 25 kA 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 (TN-S, TT systems) Rated Voltage (Un) 690 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) Nominal Discharge Current (In) 8/20 µs 25.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 60 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.9 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand According to IEC 61643-11 (typically 35 kA) Recommended Backup Protection 160A gL/gG fuse (consult installation manual for exact rating) Connection Terminals Line/Neutral: 25-95 mm² Earth/PE: 35-95 mm² (copper) Insulation Coordination Enhanced for 690V systems (clearance: ≥5.5mm, creepage: ≥12.5mm) Housing Protection 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=OK, red=fault) Mounting DIN-rail mountable (35 mm) Dimensions (H×W×D) ~ 288 × 90 × 75 mm (confirm with official datasheet) Weight Approximately 3.3 kg Model Interpretation PSTB: Product series 250: Discharge capacity (25.0 kA In) 690: Voltage rating (690V system) 70: Configuration code

Technical Parameters Parameter Specification / Value Standard 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, 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 25.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 60 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.3 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand According to IEC 61643-11 (typically 35 kA) Recommended Backup Protection 160A gL/gG fuse or equivalent circuit breaker (verify with installation manual) Connection Terminals Line/Neutral: 25-95 mm² Earth/PE: 35-95 mm² (copper) Auxiliary Contacts Optional remote signaling contact available Housing Protection 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=OK, red=fault) Mounting DIN-rail mountable (35 mm) Dimensions (H×W×D) ~ 288 × 90 × 75 mm (confirm with official datasheet) Weight Approximately 3.2 kg Model Interpretation PSTB: Product series 250: Discharge capacity (25.0 kA In) 600: Iimp = 25 kA 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 (TN-S, TT systems) Rated Voltage (Un) 690 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) Nominal Discharge Current (In) 8/20 µs 21.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 50 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.8 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand According to IEC 61643-11 (typically 25 kA) Recommended Backup Protection 125A gL/gG fuse (consult installation manual for exact rating) Connection Terminals Line/Neutral: 16-70 mm² Earth/PE: 25-70 mm² (copper) Insulation Coordination Enhanced for 690V systems (clearance: ≥5.5mm, creepage: ≥12.5mm) Housing Protection 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=OK, red=fault) 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 PSTB: Product series 210: Discharge capacity (21.0 kA In) 690: Voltage rating (690V system) 70: Configuration code

Technical Parameters Parameter Specification / Value Standard 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, 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 21.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 50 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.2 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand According to IEC 61643-11 (typically 25 kA) Recommended Backup Protection 125A gL/gG fuse or equivalent circuit breaker (verify with installation manual) Connection Terminals Line/Neutral: 16-70 mm² Earth/PE: 25-70 mm² (copper) Auxiliary Contacts Not standard (optional accessory may be available) Housing Protection 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=OK, red=fault) 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 PSTB: Product series 210: Discharge capacity (21.0 kA In) 600: Iimp = 25 kA 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 (TN-S, TT systems) Rated Voltage (Un) 690 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) Nominal Discharge Current (In) 8/20 µs 17.0 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 40 kA (per mode) Voltage Protection Level (Up) @ In ≤ 2.5 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: 16-70 mm² Earth/PE: 25-70 mm² (copper) Insulation Coordination Enhanced for 690V systems (clearance: ≥5.5mm, creepage: ≥12.5mm) Housing Protection 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=OK, red=fault) Mounting DIN-rail mountable (35 mm) Dimensions (H×W×D) ~ 288 × 90 × 75 mm (confirm with official datasheet) Weight Approximately 2.5 kg Model Interpretation PSTB: Product series 170: Discharge capacity (17.0 kA In) 690: Voltage rating (690V system) 70: Configuration code

Technical Parameters Parameter Specification / Value Standard 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) 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 17.0 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 or equivalent circuit breaker (verify with installation manual) Connection Terminals Line/Neutral: 16-50 mm² Earth/PE: 25-50 mm² (copper) Auxiliary Contacts Not standard (optional accessory may be available) Housing Protection 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 mountable (35 mm) Dimensions (H×W×D) ~ 288 × 72 × 62 mm (confirm with official datasheet) Weight Approximately 2.0 kg Model Interpretation PSTB: Product series 170: Discharge capacity (17.0 kA In) 600: Iimp = 25 kA 70: Configuration variant