ABB ESB20-20N-06 contactor

ABB ESB20-20N-06 Technical Analysis Report

This is a 2-pole, 20O, 2NU, 230V AC/DC universal coil modular installation contactor, suitable for single-phase load control in residential and industrial environments. It features silent operation, consum redus de energie, and integrated overvoltage protection, with a width of only 18mm and standard 35mm DIN rail mounting. Cod de comandă: 1SBE121111R0620.

1. Defalcarea modelului

2. Specificații de bază

Date electrice

Mecanic & Environmental Data

3. Descrierea funcției
4. Universal coil technology: AC/DC universal coil, no AC/DC distinction, instalare flexibilă, completely silent and vibration-free operation.
5. Integrated overvoltage protection: Built-in overvoltage suppression in control circuit, improves system reliability and service life.
6. Design modular: Doar 18 mm latime, fully compatible with other modular DIN rail components, economisește spațiu în dulap.
7. Compatibilitate cu accesorii: Supports standard accessories (contacte auxiliare, interblocări mecanice, etc.), tool-free plug-and-play installation.
8. Safety design: Complies with EN/IEC/UL standards, provides reliable electrical isolation for personnel and equipment safety.
9. Aplicație largă: Suitable for controlling electric heaters, hot water systems, pump/fan motors, lighting and other single-phase loads.
10. Recomandări de selecție

Suitable Applications

Iluminat, încălzire, ventilation control in residential and commercial buildings

Single-phase motor control (pompe, fani) for small industrial equipment

Noise-sensitive environments (spitale, birouri, homes)

Space-limited distribution boards / dulapuri de control

Criterii de selecție

1. Load type matching:

Sarcină rezistivă (AC-1): Use 20A rated current directly

Motor load (AC-7a/7b): Recommended ≤9A (4.6kW) at 230V single-phase

Inductive load: Derating or surge suppressor recommended

2. Coil voltage selection:

Match control system supply (230V AC/DC)

Other voltages available: ESB20-20N-01 (24V), ESB20-20N-04 (110V)

3. Configurarea contactului:

This model: 2NU, suitable for two independent circuits

For NC contacts: ESB20-02N series (2NC)

For auxiliary contacts: Add auxiliary contact modules

4. Environmental conditions:

Derate above +40°C ambient temperature

Extra protection required in humid or corrosive environments

5. Note de instalare

Pre-Installation

Verify model matches order, inspect for physical damage

Confirm coil voltage matches control supply

Prepare standard 35mm DIN rail and suitable terminals

Installation Procedure

Clip contactor firmly onto 35mm DIN rail

Wire main and control circuits per diagram; coil is non-polarized

Cuplul terminalului: 2.5N·m (conductor: 0.5–2.5mm²)

Accessories clip directly onto top/side without tools

Siguranţă

Isolate and verify voltage-free before installation

Separate main and control wiring to avoid interference

Ensure adequate ventilation to prevent overheating

Maintain ≥5mm clearance around contactor for heat dissipation

Punerea în funcțiune & Întreţinere

Check wiring before first energization

Test contactor operation for correct switching and no abnormal noise

Inspect contacts and terminal tightness regularly (at least annually)

6. Modele alternative

Same-Series Alternatives

Upgraded Alternatives

ABB ESB20-20N-06 is a compact, high-performance installation contactor. With silent operation, universal coil, low power consumption and modular design, it is an ideal solution for single-phase load control in residential and industrial applications. Proper selection, installation and maintenance ensure long-term reliable performance and safe, efficient control for electrical systems.

ABB Contactor Standard Selection Procedure

(Industrial & Clădire, for sales / quotation / proiecta)

Using ESB (building) and AF/A (industrial) as examples – 8-step precise selection ready for proposals and quotations.

1. Define Application & Familie de produse

Clădire / Rezidențial / Distribution board: Iluminat, încălzire, pompe, fani, small motors → ESB/EN series (silent, DIN rail, narrow width)

Industrial / Echipamente / Control cabinet: Fani, pompe, compresoare, motor main circuits → AF/A series (tensiune largă, viata lunga, grele)

2. Determine Load Category (Critical for Derating)

Per IEC 60947 utilization categories:

AC-1: Resistive loads (încălzitoare, iluminat) → use rated current directly

AC-3: Squirrel-cage motor DOL (most common industrial) → motor current ≤ contactor rated current

AC-7a/7b: Building small motors, fani, pumps → use building contactor rated values

3. Calculate Operating Current & Capacitate nominală
4. Determine current from power / Voltaj
5. Allow 1.1–1.25x safety margin (aprindere, continuous duty)
6. Select corresponding rated current (Ie) from ABB catalog

Exemplu: 230V single-phase 2kW heater ≈ 8.7A → ESB20-20N is sufficient

4. Select Number of Poles

1P: Monofazat, single circuit

2P: Monofazat, double-pole (L+N switching, building standard)

3P: Motoare trifazate / industrial (most common)

4P: Trifazat + N or double-break

5. Select Coil Voltage & Tip
6. Tensiunea de control: 24V, 110V, 230V, 400V, etc.
7. Tip bobină:

Clădire: AC/DC universal coil (ESB series, non-polar, silent)

Industrial: Bobina cu gamă largă (AF series, stable at 85–110% Un)

6. Define Auxiliary Contact Requirements

Încorporat: From model (20=2NU, 02=2NC)

Expandable: EH series auxiliary contacts (1NU+1NC, 2NU, etc.)

Used for: Status feedback, interlocking, sequential control

7. de mediu & Cerințe speciale

Altitudine >1000m, temperatură >40°C → derate or upsize

Silent requirement (residential/office): Must use ESB silent type

Protecţie: IP20 normally sufficient for panel mounting

Mechanical interlock / inversarea: Use dedicated interlock accessories

8. Final Verification: Model + Certificari
9. Confirm full model: family–current–contacts–coil

Exemplu: ESB20-20N-06

2. Verify certifications: CCC, IEC, RoHS
3. Confirm mounting: 35mm șină DIN / montare cu șuruburi

Simplified Selection Mnemonic

1. Choose family by application
2. Choose duty by load type
3. Calculate current with margin
4. Confirm poles and coil voltage
5. Add aux contacts for control
6. Check environment and derate
7. Verify model for final list