CA3KN31MD | TeSys K control relay – 3 NO + 1 NC – <= 690 V - 220 V DC standard coil - Schneider Electric

Name: TeSys K Relay, 3NO+1NC, 220VDC Coil, 690V | CA3KN31MD
Brand: Schneider Electric
SKU: CA3KN31MD
Price: 2061.60 INR
Availability: InStock

SKU: CA3KN31MD

Original price was: ₹4,295.00.Current price is: ₹2,061.60. Excl. GST

In stock

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📋 Technical Specifications

Parameter	Value
Brand	Schneider Electric
Part Number / SKU	CA3KN31MD
Category	Relay
Coil Voltage	220V DC
Max Contact Voltage	690V AC
Contact Configuration	3 NO + 1 NC
Standard	IEC 60947-5-1
Certifications	BIS certified, CE marked, RoHS compliant

⚡ Key Features

3 NO (normally-open) contacts for load switching and sequencing; 1 NC (normally-closed) contact for interlocking, fail-safe, and alarm circuits — all contacts independently switchable up to the contact voltage rating.
220V DC coil — energises from PLC digital output (transistor or relay type), timer contact, or pushbutton; no separate relay driver card required.
Contact voltage rating 690V AC — switches 230V AC loads (solenoid valves, motor starters, indicator lamps) and DC loads (PLC inputs, LED panels) within the same contact rating.
TeSys K control relay — identical DIN rail footprint to TeSys D contactors; accepts LA1KN auxiliary contact blocks for additional NO/NC outputs; mountable on 35mm or 20mm DIN rail.
Manufactured to IEC 60947-5-1 — complies with the applicable Indian BIS and IEC international standards for this product category.
BIS certified, CE marked, RoHS compliant — meets Indian regulatory requirements for use in government, commercial, and industrial electrical installations.
Genuine authorised Schneider Electric product — sourced directly from the official distribution network with full manufacturer traceability and warranty.
GST invoice provided for India orders — valid for corporate procurement, government project orders, and public tender supply via myelectric.in.
Worldwide export available — UAE, Singapore, UK, USA, Sri Lanka & more. Contact +91 94814 00316 for bulk pricing and international shipping.

❓ Frequently Asked Questions

Q: The CA3KN31MD has a coil voltage of 220V DC — what control supply is needed?

A: This Schneider Electric device requires a 220V DC control supply connected to the coil terminals (A1 and A2). For DC coils, observe polarity where marked. DC coils produce no inrush and are preferred for PLC output cards. Always fit a surge suppressor across the coil when switching with a PLC or solid-state relay.

Q: What circuit can the 3 NO + 1 NC contacts of the CA3KN31MD switch at 690V AC?

A: The 3 NO + 1 NC contacts on the CA3KN31MD are rated for switching at up to 690V AC. These auxiliary contacts are typically used for: (1) indication lamps and buzzers, (2) PLC input feedback to confirm device state, (3) interlocking with other contactors or relays in control circuits. Check the current rating of the auxiliary contact (typically 10A at 250V AC) — do not use for power load switching.

Q: Can the CA3KN31MD relay be mounted on a DIN rail socket for easy replacement?

A: This Schneider Electric relay typically requires direct panel or DIN rail wiring. For applications requiring frequent relay replacement, consider the plug-in relay variant of this series with a matching socket base.

Q: How do I test the CA3KN31MD relay in the field without a signal source?

A: Most Schneider Electric relays can be manually forced using the test button (if fitted) — this mechanically closes the relay contacts without energising the coil, allowing functional testing of the controlled circuit. For coil testing, use a multimeter to measure coil resistance (typically 500–2000Ω for AC coils at rated voltage) and compare with datasheet values.