Monitoring Relays for Generators and ATS Systems
How phase-sequence, voltage/frequency and temperature monitoring relays let an ATS safely transfer a load onto a standby generator and back.
- Part number
- 1SCA153458R1001
- Model no
- OXB250E3S3QT
Automatic Transfer Switches TruONEABB 1SCA153458R1001 OXB250E3S3QT 4P 250A 18kA Automatic Transfer Switch
ABB TruONE OXB250E3S3QT automatic transfer switch, 4P switched-neutral, 250 A, 18 kA Icw, Level 3 LCD, QT termination.
Description
About the OXB250E3S3QT
About the OXB250E3S3QT
ABB's OXB250E3S3QT, SKU 1SCA153458R1001, is a 4-pole, 250 A TruONE automatic transfer switch with a switched neutral and an 18 kA, 0.3 s short-time withstand rating. The Level 3 LCD controller gives on-site visibility into transfer parameters, and supply cabling connects at the top with the load wired at the bottom (QT).
Certifications & Standards
- IEC 60947-6-1
Selection Notes
The OXB250E3S3QT carries the 250 A rating within the same S-coded, 4-pole frame as its lower-current siblings, switching the neutral along with the three phases for installations where that is required. Its Level 3 LCD controller sits between the base Level 2 DIP and the touchscreen Level 4, giving an on-site display for transfer events without the full interface. QT termination routes supply cabling in at the top of the enclosure rather than the bottom, the reverse of the QB layout.
Specification
Full specification
Material Compliance 1
| RoHS Information | Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019 |
|---|
Environmental 2
| Degree of Protection | Front IP20 |
|---|---|
| Pollution Degree | 3 |
Dimensions 4
| Product Net Width | 375 mm, 14.76 in |
|---|---|
| Product Net Height | 305 mm, 12.01 in |
| Product Net Depth / Length | 183 mm, 7.2 in |
| Product Net Weight | 15.57 kg, 34.33 lb |
Show all 51 specifications ↓ Show less ↑44 more values in Identification, Technical, External Classifications and Standards, Logistics.
Identification 11
| Part number | 1SCA153458R1001 |
|---|---|
| Type designation | OXB250E3S3QT |
| Brand | ABB |
| Condition | New, factory sealed |
| Source | ABB and its authorised distributors |
| Warranty | Manufacturer warranty |
| EAN | 6417019844848 |
| ETIM class | EC000216 |
| eCl@ss | 27371403 |
| Minimum Order Quantity | 1 piece |
| Customs Tariff Number | 85365080 |
Technical 20
| Controller Type | Level 3 (LCD) |
|---|---|
| Conventional Free-air Thermal Current (Ith) | Θ = 40 °C 250 A |
| Fourth Pole Position | Left and Right Side |
| Fourth Pole Type | Switched - Simultaneous Function |
| Handle Type | Direct Mount |
| Number of Poles | 4P |
| Position of Line Terminals | Supplies on Top - Load on Bottom |
| Power Loss | at Rated Operating Conditions per Pole 9.7 W, Total 29.1 W |
| Rated Frequency (f) | Main Circuit 50-60 Hz |
| Rated Impulse Withstand Voltage (Uimp) | 8 kV |
| Rated Insulation Voltage (Ui) | 1000 V |
| Rated Operational Current AC-31B (Ie) | (200 … 415 V AC) 250 A |
| Rated Operational Current AC-32B (Ie) | (200 … 415 V AC) 250 A |
| Rated Operational Current AC-33B (Ie) | (200 … 415 V AC) 250 A |
| Rated Operational Voltage | Main Circuit 200...480 V AC |
| Rated Short-time Withstand Current Low Voltage (Icw) | for 0.3 s 18 kiloampere rms |
| Special Functions | Open style |
| Standards | IEC60947-6-1 |
| Terminal Type | Bolt |
| Transition Type | Delayed |
External Classifications and Standards 3
| ETIM 10 | EC000216 - Switch disconnector (AC) |
|---|---|
| eClass | V11.1 : 27371403 |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) |
Logistics 10
| Package Level 1 Units | box 1 piece |
|---|---|
| Package Level 1 Width | 345 mm, 13.58 in |
| Package Level 1 Depth / Length | 445 mm, 17.52 in |
| Package Level 1 Height | 240 mm, 9.45 in |
| Package Level 1 Gross Weight | 16.27 kg, 35.87 lb |
| Package Level 1 EAN | 6417019844848 |
| Shipping weight | 15.57 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 02 Oct 2026
Documents
Documents for 1SCA153458R1001
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- IEC60947-6-1
Quick answers
Questions about the OXB250E3S3QT
What is the rated current of OXB250E3S3QT?
The rated current of OXB250E3S3QT is 250 A.
Which supply voltage is OXB250E3S3QT rated for?
The rated operational voltage of OXB250E3S3QT is 200–480 V AC.
What is the HS code of OXB250E3S3QT for customs?
The tariff (HS) code on file for OXB250E3S3QT is 853650.
What is the EAN of OXB250E3S3QT?
The EAN (GTIN) of OXB250E3S3QT is 6417019844848.
Where does OXB250E3S3QT ship from, and how fast?
OXB250E3S3QT ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Guides
Guides for ATS
Reviews
Customer reviews
Series
ABB Automatic Transfer Switches TruONE
- Brand
- ABB
- Series
- Automatic Transfer Switches TruONE
