ABB Sace E2 20 PR121/P 240V 2000A 3-Pole Air Circuit Breaker
Original price was: $2,499.00.$2,199.00Current price is: $2,199.00.
Condition: Used
Fully Working
1 in stock
ABB Sace E2 20 PR121/P 240V 2000 Amp 3-Pole Air Circuit Breaker
The ABB Sace E2 20 is a heavy-duty, low-voltage 3-pole air circuit breaker (ACB) rated for continuous current up to 2000 Amperes at 240V/440V/690V AC. Designed for demanding switchboard architectures, main power distribution boards (PDBs), and marine diesel generator sets, this unit provides precise thermal-magnetic protection via the onboard microprocessor-based PR121/P electronic trip unit.
Model Details
- Brand: ABB SACE
- Series: Emax E2 (E2B / E2N / E2S / E2L Frame)
- Model Designation: SACE E2 20
- Trip Unit: PR121/P (Electronic Microprocessor Release, LI / LSI Functions)
- Manufacturer Part Number (MPN): 1SDA055954R1 / E2.2N 2000 (Cross-frame reference: SACE E2B/N/S 2000A)
- Condition: Used
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer & Series | ABB SACE Emax E2 |
| Rated Uninterrupted Current (In) | 2000 A |
| Number of Poles | 3-Pole (3P) |
| Rated Operational Voltage (Ue) | 240V / 415V / 440V / 690V AC |
| Rated Insulation Voltage (Ui) | 1000 V AC |
| Rated Impulse Withstand Voltage (Uimp) | 12 kV |
| Trip Unit Model | PR121/P (Electronic RMS Sensing) |
| Protection Functions Available | L (Overload), S (Selective Short-Circuit), I (Instantaneous) |
| Rated Ultimate Short-Circuit Breaking Capacity (Icu) | 65 kA @ 240V/415V AC |
| Rated Service Short-Circuit Breaking Capacity (Ics) | 100% Icu |
| Rated Short-Time Withstand Current (Icw) | 55 kA (1s) |
| Mounting Execution | Fixed Front (F) / Drawout / Withdrawable (W) Available |
| Terminal Configuration | Rear Horizontal (HR) / Rear Vertical (VR) Heavy Busbar Connection |
| Operating Frequency | 50 / 60 Hz |
| Mechanical Life | 25,000 Operations (with regular maintenance) |
| Operating Temperature Range | -25°C to +70°C |
 Key Features
- Advanced Microprocessor Protection (PR121/P): Features true RMS digital current sensing with adjustable DIP-switch settings for overload and selective short-circuit delay.
- Modular Marine-Grade Architecture: Designed with ruggedized mechanics to withstand vibration profiles up to 0.7g and harsh maritime/offshore operating ambients.
- Comprehensive Auxiliary Interlocking: Integrated auxiliary contact blocks mechanical trip indicators, and front-accessible charging status displays.
- Low Watt-Loss Contact Design: Features silver-alloy contact tips with high dissipation geometry, minimizing thermal rise across main switchboard busbar junctions.
Applications
- Marine Main Switchboards (MSB): Main generator incoming protection (600 kW to 1200 kW marine gensets).
- Industrial Low-Voltage Distribution: Secondary substation breaker for step-down transformer outputs (e.g., 1000 kVA to 1600 kVA transformers).
- Emergency Switchboard Tie-Breakers: Marine bus-tie interlocks and emergency generator feed isolators.
- Heavy Industrial Motor Control Centers (MCC): Incomer feeder protection for continuous-duty chemical, drilling, and processing plants.
Compatible Switchgear Frames & Retrofit Solutions
- ABB MNS Low Voltage Switchgear Systems
- Schneider Electric / Square D Masterpact legacy retrofit cradles (via conversion kits)
- Siemens Sivacon 8PT / S8 marine and industrial cubicles
- Teraski and Hyundai marine switchboard retrofits
Part Number Cross-References
- ABB Frame Part Numbers: 1SDA055954R1, 1SDA055738R1, E2N20, E2S20, E2B20
- Trip Unit Module: PR121/P-LI, PR121/P-LSI, PR122/P, PR123/P
Frequently Asked Questions:
Can this ABB Sace E2 20 breaker be used in 440V 60Hz marine networks?
Yes. The breaker is rated for voltages up to 690V AC at both 50Hz and 60Hz. It is fully rated for standard marine 440V / 480V 3-phase ungrounded distribution systems.
What is the difference between an E2N 20 and an E2S 20 frame?
The primary difference lies in the short-circuit breaking capacity The E2N is typically rated at 65 kA @ 415V/440V, whereas the heavy-duty E2S variant offers higher breaking capacity (up to 85 kA) for applications with larger fault current levels near primary generators.
What does the PR121/P trip unit on this ABB E2 20 protect against?
The PR121/P electronic trip unit provides RMS-based current protection against thermal overloads selective short-circuits and instantaneous short-circuits.
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