Specifications General Product Name: Installation Contactor Model / Part Number: ESB20‑20N‑06 (ABB 1SBE121111R0620) Type: 2‑pole installation contactor Series: ESB20..N Mounting: DIN‑rail or panel mounting Protection Class: IP20 Applicable Standards: IEC/EN 60947‑1, IEC/EN 60947‑4‑1 compliance Electrical Ratings Rated Operational Current (AC‑1): 20 A (single‑phase load) Rated Control Circuit Voltage: 230 V AC / 230 V DC Rated Main Circuit Voltage: Up to ~250 V AC (single‑phase) Rated Insulation Voltage (Ui): 400 V Rated Impulse Withstand Voltage (Uimp): ~6 kV Control Voltage Type: AC/DC control operation supported Operating Frequency: 50 Hz / 60 Hz / DC control compatible Contacts Configuration: 2 normally open (NO) main contacts Utilization Category: AC‑1 / AC‑7a operational use Performance Rated Operational Power (AC‑7a): ~4.6 kW at 230 V Rated Operational Power (AC‑3): ~1.3 kW at 230 V (resistive or motor load) Electrical Endurance: ~150,000 cycles (contact switching) Mechanical Endurance: ~1,000,000 cycles Mechanical & Physical Number of Poles: 2 Contact Type: Normally open (NO) Connection Type: Screw terminals for main and control circuits Width / Size: 18 mm (modular width) Weight: ~0.14 kg Environmental Operating Ambient Temperature: ~‑25 °C to +55 °C Pollution Degree: 3 Degree of Protection: IP20 (basic protection) Typical Applications Switching and control of single‑phase loads Water heaters, HVAC and ventilation systems Pumps and small motor loads Lighting and resistive load control Panelboards and distribution boards