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
- CA3KN22BD
- Model no
- CA3K
- UL
- CSA
- CE
- UKCA
- CCC
- EAC
- CB Scheme
Schneider TeSys KSchneider Electric CA3KN22BD TeSys K Control Relay 2NO 2NC 24 V DC Coil Screw Clamp Auxiliary Contactor
TeSys K control relay, 2NO+2NC, 10 A Ith, 24 V DC coil, screw clamp terminals, DIN rail or panel mount.
Description
About the CA3K
About the CA3K
The Schneider Electric CA3KN22BD is a TeSys K control relay with 2NO+2NC contact composition and a 24 V DC coil, rated 10 A conventional thermal current (Ith) at up to 690 V. It switches AC-15 and DC-13 electromagnetic loads for pilot-circuit control, interlocking and signal duplication, with screw clamp terminals for DIN rail or panel mounting.
Certifications & Standards
- CE
- UKCA
- UL
- CSA
- CCC
- EAC
- IEC 60947-5-1
Selection Notes
The 2NO+2NC contact composition gives an equal number of make and break signals, useful for interlocking circuits that must mirror a command and its complement. Pick the 24 V DC coil when the control circuit already runs at that voltage; using a coil voltage matching the existing control transformer tap avoids an extra step-down winding. The DC coil has no inrush surge and a longer 30–40 ms closing time than the AC-coil CA2Kseries, which electronic surge suppression trades for lower steady-state power draw — relevant when the relay is driven from a PLC transistor output or a current-limited 24 V DC rail.
Specification
Full specification
Main 10
| Range | TeSys |
|---|---|
| Product name | TeSys CAK |
| Product or Component Type | Control relay |
| Device short name | CA3K |
| Contactor application | Control circuit |
| Utilisation category | AC-15, DC-13 |
| Pole contact composition | 2 NO + 2 NC |
| [Ue] rated operational voltage | <= 690 V <= 400 Hz |
| Control circuit type | DC standard |
| [Uc] control circuit voltage | 24 V DC |
Complementary 23
| [Ith] conventional free air thermal current | 10 A (at 122 °F (50 °C)) |
|---|---|
| Irms rated making capacity | 110 A IEC 60947 |
| Associated fuse rating | 10 A gG conforming to IEC 60947, 10 A gG conforming to VDE 0660 |
| [Ui] rated insulation voltage | 690 V IEC 60947, 750 V VDE 0110 group C, 690 V BS 5424, 600 V CSA C22.2 No 14 |
| Mounting Support | Rail, Plate |
| Connections - terminals | screw clamp terminals 1 0.002…0.006 in² (1.5…4 mm²)solid, screw clamp terminals 2 0.002…0.006 in² (1.5…4 mm²)solid, screw clamp terminals 1 0.001…0.006 in² (0.75…4 mm²)flexible with cable end, screw clamp terminals 2 0.001…0.006 in² (0.75…4 mm²)flexible without cable end, screw clamp terminals 1 0.0005…0.002 in² (0.34…1.5 mm²)flexible with cable end, screw clamp terminals 2 0.0005…0.002 in² (0.34…1.5 mm²)flexible without cable end |
| Tightening torque | 11.5 lbf.in (1.3 N.m) screw clamp terminals flat Ø 6 mm, 11.5 lbf.in (1.3 N.m) screw clamp terminals Philips No 2 0.2 in (6 mm) |
| Control circuit voltage limits | Operational: 0.8...1.15 Uc (at <122 °F (50 °C)), Drop-out: 0.1...0.75 Uc (at <122 °F (50 °C)) |
| Operating time | 10 ms coil de-energisation and NO opening, 30...40 ms coil energisation and NO closing, 15 ms coil de-energisation and NC closing, 25...35 ms coil energisation and NC opening |
| Mechanical durability | 20 Mcycles |
| Maximum operating rate | 10000 cyc/h |
| Immunity to microbreaks | 2 ms |
| Inrush power in W | 3 W 68 °F (20 °C)) |
| Hold-in power consumption in W | 3 W 68 °F (20 °C) |
| Heat dissipation | 3 W |
| Minimum switching voltage | 17 V |
| Minimum switching current | 5 mA |
| Non overlap distance | 0.02 in (0.5 mm) |
| Insulation resistance | > 10 MOhm |
| Height | 2.3 in (58 mm) |
| Width | 1.8 in (45 mm) |
| Depth | 2.2 in (57 mm) |
| Net Weight | 0.496 lb(US) (0.225 kg) |
Environment 9
| Standards | EN/IEC 60947-5-1, GB/T 14048.5, UL 60947-5-1, CSA C22.2 No 60947-5-1, JIS C8201-5-1 |
|---|---|
| Product Certifications | CB Scheme, CCC, UL, CSA, EAC, CE, UKCA |
| IP degree of protection | IP2X |
| Protective treatment | TC IEC 60068 |
| Ambient Air Temperature for Operation | -13…122 °F (-25…50 °C) |
| Ambient Air Temperature for Storage | -58…176 °F (-50…80 °C) |
| Operating altitude | 6561.68 ft (2000 m) without derating |
| Flame retardance | V1 conforming to UL 94, Requirement 2 conforming to NF F 16-101, Requirement 2 conforming to NF F 16-102 |
| Mechanical robustness | Vibrations contactor open2 Gn, 5...300 Hz IEC 60068-2-6, Vibrations contactor closed4 Gn, 5...300 Hz IEC 60068-2-6, Shocks contactor open10 Gn for 11 ms IEC 60068-2-27, Shocks contactor closed15 Gn for 11 ms IEC 60068-2-27 |
Show all 56 specifications ↓ Show less ↑14 more values in Identification, Contractual warranty, Logistics.
Identification 8
| Part number | CA3KN22BD |
|---|---|
| Type designation | CA3K |
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 3389110500172 |
Contractual warranty 1
| Warranty (in months) | 18 |
|---|
Logistics 5
| Country of origin | ID |
|---|---|
| Shipping weight | 0.225 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
Documents
Documents for CA3KN22BD
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- UL
- CSA
- CE
- UKCA
- CCC
- EAC
- CB Scheme
- EN/IEC 60947-5-1
- GB/T 14048.5
- UL 60947-5-1
- CSA C22.2 No 60947-5-1
- JIS C8201-5-1
Quick answers
Questions about the CA3K
What is the rated current of CA3K?
The rated current of CA3K is 10 A.
Which supply voltage is CA3K rated for?
The rated operational voltage of CA3K is 24 V DC.
What is the HS code of CA3K for customs?
The tariff (HS) code on file for CA3K is 853650.
What is the EAN of CA3K?
The EAN (GTIN) of CA3K is 3389110500172.
Where does CA3K ship from, and how fast?
CA3K 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.
Reviews
Customer reviews
Series
Schneider Electric Schneider TeSys K
- Brand
- Schneider Electric
- Series
- Schneider TeSys K
