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- Schneider Electric CA3KN40ED TeSys K Control Relay 4NO 48 V DC Coil Screw Clamp Auxiliary Contactor Schneider Electric CA3KN40ED TeSys K Control Relay 4NO 48 V DC Coil Screw Clamp Auxiliary Contactor
Schneider Electric CA3KN40ED TeSys K Control Relay 4NO 48 V DC Coil Screw Clamp Auxiliary Contactor
Schneider Electric CA3KN40ED TeSys K Control Relay 4NO 48 V DC Coil Screw Clamp Auxiliary Contactor
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- Description
CA3KN40ED is Schneider Electric's TeSys K control relay in a 4NO arrangement, built around a 48 V DC coil with electronic surge suppression and rated 10 A Ith at up to 690 V. It is rated for AC-15/DC-13 duty, used to control and duplicate pilot signals in motor control and interlocking circuits, and connects via screw clamp terminals on DIN rail or a mounting plate.
Technical Specifications
| Reference | CA3KN40ED |
| Brand | Schneider Electric |
| Range | TeSys K |
| Product Type | Control Relay |
| Pole Contact Composition | 4NO |
| Utilisation Category | AC-15 / DC-13 |
| Rated Operational Voltage (Ue) | ≤690 V (≤400 Hz) |
| Control Circuit Voltage (Uc) | 48 V DC |
| Conventional Thermal Current (Ith) | 10 A (at 50 °C) |
| Rated Making Capacity (Irms) | 110 A (IEC 60947) |
| Rated Insulation Voltage (Ui) | 690 V (IEC 60947) |
| Associated Fuse Rating | 10 A gG (IEC 60947 / VDE 0660) |
| Control Circuit Voltage Limits | drop-out 0.1–0.75 Uc, operational 0.8–1.15 Uc (≤50 °C) |
| Maximum Operating Rate | 10,000 cyc/h |
| Inrush / Hold-in Power | 3 W / 3 W (20 °C) |
| Mounting | 35 mm DIN rail or screw-fixed mounting plate |
| Connections | Screw clamp terminals, 1.5–4 mm² solid / 0.75–4 mm² flexible with cable end |
| Dimensions (H × W × D) | 58 × 45 × 57 mm (H × W × D) |
| Net Weight | 0.225 kg |
| IP Degree of Protection | IP2X |
| Ambient Temperature | -25…+50 °C operation, -50…+80 °C storage |
Certifications & Standards
- CE
- UKCA
- UL
- CSA
- CCC
- EAC
- IEC 60947-5-1
Selection Notes
Choose the 4NO version when the application needs four make contacts for signal duplication where no break contact is required. The 48 V DC coil variant fits control circuits already wired at that voltage, so the contactor coil can be driven directly without an additional transformer tap. 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.