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.
The ABB 1SCA153427R1001, catalog designation OXB200E3S2QB, is a 200 A TruONE automatic transfer switch with 4 poles, switching the neutral along with the three phases. It carries an 18 kA short-time withstand rating for 0.3 s, a Level 2 DIP-switch controller, and a bottom-supply, top-load (QB) terminal arrangement rated for 200-480 V AC main circuit operation.
The 4-pole (S) build of the OXB200E3S2QB switches the neutral together with the three phases, which fits installations - such as separately derived sources - where the neutral itself needs isolating during transfer; the 3-pole (X) variant is the choice where the neutral stays common. At 200 A and an 18 kA short-time withstand, this frame suits a sub-distribution or smaller building transfer point rather than a main incomer. The Level 2 DIP-switch controller covers straightforward transfer logic without a display; step up to Level 3 or Level 4 in this frame for on-site event visibility. QB termination brings the supply in at the bottom of the enclosure.
| RoHS Information | Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019 |
|---|
| Degree of Protection | Front IP20 |
|---|---|
| Pollution Degree | 3 |
| 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 | 15.54 kg, 34.26 lb |
| Part number | 1SCA153427R1001 |
|---|---|
| Type designation | OXB200E3S2QB |
| Brand | ABB |
| Condition | New, factory sealed |
| Source | ABB and its authorised distributors |
| Warranty | Manufacturer warranty |
| EAN | 6417019844534 |
| ETIM class | EC000216 |
| eCl@ss | 27371403 |
| Minimum Order Quantity | 1 piece |
| Customs Tariff Number | 85365080 |
| Controller Type | Level 2 (DIP) |
|---|---|
| Conventional Free-air Thermal Current (Ith) | Θ = 40 °C 200 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 Bottom - Load on Top |
| Power Loss | at Rated Operating Conditions per Pole 5.8 W, Total 17.4 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) 200 A |
| Rated Operational Current AC-32B (Ie) | (200 … 415 V AC) 200 A |
| Rated Operational Current AC-33B (Ie) | (200 … 415 V AC) 200 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 |
| ETIM 10 | EC000216 - Switch disconnector (AC) |
|---|---|
| eClass | V11.1 : 27371403 |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) |
| 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 | 16.24 kg, 35.8 lb |
| Package Level 1 EAN | 6417019844534 |
| Shipping weight | 15.54 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 02 Oct 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of OXB200E3S2QB is 200 A.
The rated operational voltage of OXB200E3S2QB is 200–480 V AC.
The tariff (HS) code on file for OXB200E3S2QB is 853650.
The EAN (GTIN) of OXB200E3S2QB is 6417019844534.
OXB200E3S2QB ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
How phase-sequence, voltage/frequency and temperature monitoring relays let an ATS safely transfer a load onto a standby generator and back.