Contactors for Data Center PDU and UPS Systems: Selection Guide
AC-1 and AC-6a contactors for data center PDU and UPS systems: sizing, harmonic derating, coil selection, and endurance guidance for engineers. Shop at Stoklink.
- Part number
- LUA1C20
- Model no
- LUA1
Schneider Electric LUA1C20 TeSys U Auxiliary Signalling Contacts 2 NO Auxiliary Contact Block
TeSys U auxiliary signalling contact block, 2 NO, 5 A 250 V AC/DC
Description
About the LUA1
About the LUA1
The Schneider Electric LUA1C20 is a TeSys U auxiliary signalling contact block with a 2 NO contact composition, rated up to 5 A at 250 V AC/DC. It inserts into the dedicated slot of a TeSys U power base and provides fault signalling (SD contact) and ready-position indication (OF contact), both wired as normally-open.
Selection Notes
The 2NO composition reports both the open/closed status (OF contact) and the tripping status (SD contact) as normally-open signals, matching PLC input cards or indicator circuits that expect uniform NO logic - choose the 1NO+1NC composition instead where the trip signal needs to be fail-safe (normally-closed).
Specification
Full specification
Main 3
| Range | TeSys |
|---|---|
| Device short name | LUA1 |
| Product or Component Type | Auxiliary contact |
Complementary 9
| Auxiliary contact composition | 2 NO |
|---|---|
| Signalling function | Fault signalling, Indicating rotary knob in ready position |
| [Ue] rated operational voltage | <= 250 V AC, <= 250 V DC |
| [Ui] rated insulation voltage | 250 V CSA, 250 V IEC 60947-5-1, 250 V UL |
| [Ith] conventional free air thermal current | 2.5 A |
| Minimum switching voltage | 17 V |
| minimum switching current | 5 mA |
| Net Weight | 0.07 lb(US) (0.03 kg) |
| Connections - terminals | screw clamp terminals |
Contractual warranty 1
| Warranty (in months) | 18 |
|---|
Show all 26 specifications ↓ Show less ↑13 more values in Identification, Logistics.
Identification 8
| Part number | LUA1C20 |
|---|---|
| Type designation | LUA1 |
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 3389110367300 |
Logistics 5
| Country of origin | CZ |
|---|---|
| Shipping weight | 0.03 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
Documents
Documents for LUA1C20
No documents are on file for this part yet.
Ask us for the datasheet
Quick answers
Questions about the LUA1
What is the rated current of LUA1?
The rated current of LUA1 is 2.5 A.
Which supply voltage is LUA1 rated for?
The rated operational voltage of LUA1 is 250 V AC.
What is the HS code of LUA1 for customs?
The tariff (HS) code on file for LUA1 is 853650.
What is the EAN of LUA1?
The EAN (GTIN) of LUA1 is 3389110367300.
Where does LUA1 ship from, and how fast?
LUA1 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Guides
Guides for contactors
NEMA vs IEC Contactor Standards: Key Differences and Size Comparison
Compare AC3 rating IEC contactors versus NEMA size codes, with cross-reference tables, derating formulas, and selection tips for engineers. Shop at Stoklink.
How to Select the Right Contactor for Your Application: Complete Checklist
Master AC3 rating selection with our complete contactor checklist covering load sizing, utilization categories, derating, and coordination. Shop at Stoklink.
