ABB E4.2N4000R4000 Air Circuit Breaker

E4.2N 4000 with Ekip trip unit R4000 — R4000 means the rated current of the electronic trip unit is 4000A

✅ Model Breakdown

E4.2: Frame size (Emax2 series, maximum frame rating 4000A)

N: Short-circuit breaking capacity grade N, Icu=66kA @400V AC

4000: Frame rated current Iu=4000A

R4000: Rated current In of Ekip electronic trip unit (Trip unit options: Dip / Touch / Hi-Touch / G Touch; protection types: LSI / LSIG / LI)

✅ Key Electrical Specifications

Frame rated current Iu: 4000 A

Trip unit rated current In: 4000 A

Rated operational voltage Ue: AC 690 V

Rated insulation voltage Ui: AC 1000 V

Impulse withstand voltage Uimp: 12 kV

Icu (Ultimate short-circuit breaking capacity): 66 kA (400~690V)

Ics (Service short-circuit breaking capacity): 66 kA

Icw (Short-time withstand current): 66 kA for 1s; 50 kA for 3s

Mechanical endurance: 15,000 operations

Electrical endurance: 5,000 operations at ≤440V; 4,000 operations at 500~690V

✅ Construction & Dimensions (Fixed type F, rear horizontal terminals HR, 3P)

3P: W384 × H371 × D270 mm, net weight 56 kg

4P: W510 × H371 × D270 mm, net weight 70 kg

Terminal options: Rear horizontal HR; optional rear vertical VR; withdrawable W version

Standard equipped: 4 sets of auxiliary contacts, position contacts (Open / Closed)

✅ Trip Unit Comparison (Key for selection)

Ekip Dip: Basic version, no display, LSI/LSIG
Ekip Touch: Color display, metering, communication support, LSI/LSIG
Ekip Hi-Touch: Advanced color display, energy metering, harmonic monitoring, waveform recording
Ekip G Touch: Integrated gateway, built-in ABB Ability remote communication

LSIG: Long-time L, Short-time S, Instantaneous I, Ground fault G; LSIG includes ground fault protection

✅ Cross-reference & Replacement Options

Same frame variants: E4.2S (Icu 85kA), E4.2H (100kA), E4.2V (150kA)

Domestic alternative reference: Chint NA8-4000, Delixi CDW3-4000, Changshu CW3-4000 (match breaking capacity 66kA)

Upgrade from legacy model: Replaces old-generation Emax E4N 4000

✅ Common Order Codes (3P Fixed HR)

Ekip Dip LSI R4000: 1SDA071192R1

Ekip Touch LSI R4000: 1SDA071195R1

Ekip Hi-Touch LSIG R4000: 1SDA071199R1

ABB Emax2 Ekip (E4.2) Fault Code List & Communication Commissioning Guide

Applicable to Ekip Dip / Touch / Hi-Touch / G Touch; Ekip Dip has no screen, only LED alarms; Touch/Hi-Touch support text & numeric fault codes and event logging

Preliminary note: Protection trips (L/S/I/G) are protection events, not hardware faults; 3xxxx numeric codes indicate internal trip unit hardware faults

LED Alarm Indications (Common to all Ekip units, for on-site quick diagnosis)

Yellow (Warning)

Steady ON: Pre-alarm, protection pre-warning, auxiliary signal alarm

2 flashes per 0.5s: Parameter configuration error

Fast flashing: Rating plug mismatched or not properly fitted

Red (Alarm/Trip)

Steady ON: Protection activated & tripped, trip command issued

Fast flashing: Sensor disconnection, trip coil open circuit, BF trip failure, protection timing fault

2 flashes every 2s: Rating plug damaged

Yellow + Red fast flashing: Communication lost between main trip board and protection timing module

Yellow + Red slow flashing: Critical internal trip unit fault, contact ABB service

On-screen Alarm & Fault Code List (Touch/Hi-Touch)

🔹 Protection Trip Events (Trip log, check first)

Display Label	Description	Remarks
L	Long-time overload trip ANSI49	Overload, thermal memory, reset after cooling
S	Short-time short-circuit ANSI51/50TD	Short-circuit short delay, for selectivity
I	Instantaneous short-circuit ANSI50	Instant short-circuit trip
G	Ground fault ANSI51N	Only available on LSIG versions
2I	Neutral overload protection	For 4P devices
IU	Current unbalance protection	Three-phase unbalance
UV	Under-voltage protection	Voltage below threshold
OV	Over-voltage protection	Voltage above threshold
f	Frequency out of range	Frequency <30Hz or >80Hz
Phase	Phase sequence error	Phase sequence protection activated
THD V / THD I	Harmonic distortion excess	Hi-Touch harmonic monitoring
MCR	Closing short-circuit protection	Short-circuit at closing instant

🔹 Hardware / Communication Alarms (Fault alarms, not trips)

Alarm Text	Fault Description	Troubleshooting
BF Trip failed command	Trip command sent, breaker remains closed with primary current present	Check YO trip coil, mechanism jamming, mechanical blockage; perform iTEST
Local bus	Internal Ekip bus W1/W2/W3/W4 communication lost, expansion module offline	Check Ekip Com / Ekip Signalling module power supply, bus terminals, module compatibility
Low battery	RTC backup battery depleted	Replace CR2450 battery kit, reset date/time after replacement
Invalid date	RTC time lost	Settings → System → Date & Time; enable SNTP sync with Com TCP
Configuration error	Conflict between rating plug and protection settings	Verify rating plug; G / I4 threshold cannot exceed 100A without Vaux auxiliary supply
Sensor broken wire	Internal CT signal abnormal	Check connection between trip unit and CT; internal failure requires factory repair
Trip coil open circuit	YO loop wiring break	Measure YO coil resistance and external wiring
SNTP error	NTP time synchronization failed (Modbus TCP module)	Check gateway, network, NTP server address
Ekip Com module missing	Communication module not detected	Check module power, bus connector, model compatibility; replace defective module
30002, 30xxx numeric codes	Trip unit firmware / MCU internal error	Power cycle; if fault persists replace trip unit, contact ABB
Breaker status unknown	Conflicting feedback from auxiliary contacts	Check auxiliary contact wiring and mechanical position

Event storage: Touch/Hi-Touch stores up to 200 latest events, with timestamp, fault current and voltage exportable; Ekip Dip has no event storage

Ekip Communication Commissioning Guide (Ekip Com Modbus RTU / Modbus TCP)

Communication module types:

Ekip Com Modbus RTU (RS485, 2-wire W1/W2, Modbus RTU)

Ekip Com Modbus TCP (Ethernet, Modbus TCP)

✅ Ekip Dip has no native communication. Communication requires Touch/Hi-Touch/G Touch plus optional Ekip Com module

3.1 Factory Default Communication Parameters

Modbus RTU: Baudrate 19200, Even parity, 1 stop bit, Slave ID 1

Modbus TCP: DHCP enabled by default; fallback static IP: 192.168.1.100, mask 255.255.255.0

Bus wiring: RS485 W1=A, W2=B; 120Ω terminating resistor required at bus ends

Power supply: Ekip Com requires 24V DC auxiliary supply (Vaux). Module will not run without 24V!

3.2 Commissioning Tools

Ekip Connect (ABB official, preferred): Parameter read/write, bus scan, event export, IP/slave address modification, firmware upgrade, iTEST; supports direct connection via USB T&P test head, independent of field bus
Modbus master tools: Modscan, Modbus Poll, PLC (Siemens, Schneider etc.)

3.3 Commissioning Steps for RTU RS485

Power off, mount Ekip Com Modbus RTU module, connect W1(A) W2(B), feed 24V DC to module; fit 120Ω terminators at bus ends
Power on, on trip unit screen: Settings → Communication → Modbus RTU

Enable bus

Set slave address (1~247, unique per bus segment)

Match baudrate & parity with master

Connect PC USB-RS485 adapter: A→W1, B→W2; common ground is critical
Ekip Connect → Scan → Serial → Configure COM port, baudrate, even parity → Start scan
Device found: Read measurements (I/U/P), breaker status, alarms; write operations require password authority
No device found troubleshooting:

Confirm 24V supply; W1/W2 polarity; common ground; terminator; address conflict; baud/parity mismatch

Confirm “Local bus enabled” on trip unit screen

3.4 Commissioning Steps for Modbus TCP

Mount Ekip Com Modbus TCP module, supply 24V DC, connect Ethernet to switch
On trip unit screen: Settings → Communication → Modbus TCP

DHCP: Enable/Disable; set static IP, subnet, gateway

Enable Modbus TCP service (Port 502)

Keep PC and module on same subnet, direct cable or via switch
Ekip Connect → Scan → Ethernet; or open module IP in browser for read-only web page
PLC/SCADA access: Modbus TCP port 502, refer to ABB Ekip Modbus register map

3.5 Access Rights & Password

Read measurements & alarms: No password required

Modify protection settings, communication parameters, clear events: Engineer password (default 000000)

iTEST trip test: Local operation only at connected position; remote test trigger blocked

3.6 Common Communication Pitfalls (E4.2N4000R4000)

Missing 24V auxiliary supply: Com module fails to start. CT self-power only supports protection logic, cannot power Com module
Ungrounded RS485 bus: Intermittent packet loss and garbled data; single-point grounding for long-distance bus
Ekip G Touch has integrated gateway. Do not use together with external Ekip Com, bus conflict will occur
Withdrawable breaker: Bus connection inside the cradle is disconnected in test position; communication only available in connected position
Modbus register types: Input registers (read-only: current, voltage, status); Holding registers (read/write: settings, control). Remote open/close requires additional Ekip Com Actuator module; standard Com module is read-only, cannot execute remote switching
Reset Rules
Protection trips (L/S/I/G): Clear fault first, then reset locally (screen reset or remote reset via YR contact)
Warning alarms (low battery, SNTP error): Auto clear after root cause removed or manual acknowledge
BF trip failure alarm: Mechanical inspection on-site required, manual confirmation to clear alarm

ABB SACE Emax2 ACB Model Specification + Full Series List + Common Order Codes

Series: Emax2 (successor to legacy Emax E1/E2/E3/E4/E6), IEC standard, widely used ACB in China; Breaking grades by Icu@400V:

B=42kA｜C=50kA｜N=66kA｜S=85kA｜H=100kA｜V=150kA

Trip unit abbreviation:

D = Ekip Dip (no display, dip-switch setting, LSI/LSIG, no native comms)

T = Ekip Touch (color display, metering, Com module compatible)

HT = Ekip Hi-Touch (color display, harmonic, recording, power quality)

GT = Ekip G Touch (integrated gateway, ABB Ability)

Protection types: LI / LSI / LSIG (G=ground fault)

Mounting: F Fixed; W Withdrawable; Terminals HR Rear Horizontal, VR Rear Vertical; 3P/4P

Full model example: E4.2N 4000 Ekip Touch LSIG 3P F HR, matching your E4.2N4000R4000

Frame Overview (4 Emax2 frame sizes)

Frame	Max Iu	Available Breaking Grades	Available Iu(A)
E1.2	1600A	B / C / N	630, 800, 1000, 1250, 1600
E2.2	2500A	B / N / S / H	800, 1000, 1250, 1600, 2000, 2500
E4.2	4000A	N / S / H / V	2000, 2500, 3200, 4000
E6.2	6300A	H / V	4000, 5000, 6300

Note: Suffix “.2” stands for Emax2; old Emax E1/E2/E4/E6 without “.2” are phased out

Full Model Description Breakdown

`E4.2 N 4000 Ekip Touch LSIG 3P F HR`

E4.2: Frame size
N: Breaking capacity class
4000: Frame rated current Iu
Ekip Touch: Trip unit type
LSIG: Protection curve
3P: Pole number
F: Mounting F Fixed / W Withdrawable
HR: Terminal HR Rear Horizontal / VR Rear Vertical / FR Front

Rating Plug Rxx: R4000=In=4000A; R3200=In=3200A, R value ≤ Frame Iu

Basic Model List

✅ E1.2 (630~1600A)

E1.2B 630 / 800 /1000 /1250 /1600

E1.2C 630 / 800 /1000 /1250 /1600

E1.2N 630 / 800 /1000 /1250 /1600

✅ E2.2 (800~2500A)

E2.2B 800 /1000 /1250 /1600 /2000 /2500

E2.2N 800 /1000 /1250 /1600 /2000 /2500

E2.2S 800 /1000 /1250 /1600 /2000 /2500

E2.2H 800 /1000 /1250 /1600 /2000 /2500

✅ E4.2 (2000~4000A)

E4.2N 2000 /2500 /3200 /4000

E4.2S 2000 /2500 /3200 /4000

E4.2H 2000 /2500 /3200 /4000

E4.2V 2000 /2500 /3200 /4000

✅ E6.2 (4000~6300A)

E6.2H 4000 /5000 /6300

E6.2V 4000 /5000 /6300

Standard Order Codes (1SDA prefix, 3P Fixed HR, no motor/YO/YC accessories)

Rule: Order code changes with trip unit; separate codes for W withdrawable and 4P versions

E1.2N 1600

Ekip Dip LSI R1600: 1SDA070492R1

Ekip Touch LSI R1600: 1SDA070495R1

Ekip Touch LSIG R1600: 1SDA070496R1

Ekip Hi-Touch LSIG R1600: 1SDA070499R1

E2.2N 2500

Ekip Dip LSI R2500: 1SDA070892R1

Ekip Touch LSI R2500: 1SDA070895R1

Ekip Touch LSIG R2500: 1SDA070896R1

Ekip Hi-Touch LSIG R2500: 1SDA070899R1

E4.2N 4000

Ekip Dip LSI R4000: 1SDA071192R1

Ekip Touch LSI R4000: 1SDA071195R1

Ekip Touch LSIG R4000: 1SDA071196R1

Ekip Hi-Touch LSIG R4000: 1SDA071199R1

E4.2S 4000

Ekip Dip LSI R4000: 1SDA071212R1

Ekip Touch LSI R4000: 1SDA071215R1

Ekip Hi-Touch LSIG R4000: 1SDA071219R1

E6.2H 6300

Ekip Touch LSI R6300: 1SDA071455R1

Ekip Touch LSIG R6300: 1SDA071456R1

Ekip Hi-Touch LSIG R6300: 1SDA071459R1

Communication Module Order Codes (Ekip Com)

Ekip Com Modbus RTU: 1SDA073440R1

Ekip Com Modbus TCP: 1SDA073441R1

Ekip Com Profibus: 1SDA073442R1

Ekip Com IEC61850: 1SDA073444R1

Ekip Com Actuator (remote switching module): 1SDA073446R1

Common Accessory Order Codes (Sold separately, not included in breaker body)

Closing coil YC AC220: 1SDA073300R1

Opening coil YO AC220: 1SDA073304R1

Motor operator M AC220: 1SDA073310R1

Auxiliary contacts 4CO: 1SDA073320R1

Signal contacts 2CO: 1SDA073322R1

RTC battery kit: 1SDA073470R1

Rating Plug R4000: 1SDA072944R1

Important Notes
The above base codes default to 3P, Fixed F, Rear Horizontal HR. Codes change for 4P / W withdrawable / VR vertical terminals
Quotation is combinational: Breaker body + motor + YO + YC + communication module are separate line items. Breaker body does not come with motor or coils as standard
Ekip Dip has no communication. Touch/Hi-Touch need Ekip Com module for Modbus
Legacy Emax (non .2) order codes start with 1SDA05, parts and trip units are not interchangeable with Emax2