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CIT Relay and Switch A21ACQ12VDC19D Automotive Relay

This 12 VDC automotive relay features a single pole single throw normally open contact configuration, with a large switching capacity up to 40A. It includes quick connect terminals for easy wiring, a coil power of 1.9W, and a sealed dust cover for protection. The relay is suitable for automotive and lamp accessories, complies with RoHS standards, and offers a reliable, compact design with dimensions of approximately 26.0 x 26.0 x 24.5 mm. It has a dielectric strength of 750V rms and an operating temperature range from -40°C to +125°C.

Authorized Distributors
Source:DigiKey
Part No:A21ACQ12VDC1.9D
Stock:0
Inv Date:05-30-2026
Price: Unit price: $1.59848
Buy/RFQ:

CIT Relay and Switch A21ACQ12VDC19D Automotive Relay Specifications:

  • Dimensions: 26.0 x 26.0 x 24.5 mm
  • Contact Rating: 40A at 14VDC
  • Maximum Switching Power: 630W
  • Coil Resistance: 7.8Ω at 6VDC, 15.6Ω at 12VDC, 31.2Ω at 24VDC
  • Coil Power: 1.9W
  • Operating Temperature Range: -40°C to +125°C
  • Dielectric Strength: 750V rms
  • Insulation Resistance: 100MΩ minimum at 500VDC
  • Durability: 100K electrical cycles, 10M mechanical cycles
  • Shock Resistance: 147m/s² for 11ms
  • Vibration Resistance: 1.5mm double amplitude at 10~40Hz
  • Weight: 31g
  • RoHS Compliant
  • Sealing: Dust cover available
  • Contact Material: AgSnO2
  • Terminal Type: Quick connect
  • Mounting options: A2F, A2M, A2S with various external mounting accessories

Buy the Cit Relay A21ACQ12VDC19D – Reliable Automotive Relay for Industrial Applications

Purchase your Cit Relay series A21ACQ12VDC19D online today and ensure your automotive or industrial applications operate with reliable switching performance. This 12VDC relay features a high capacity of 40A, quick connect terminals for quick wiring, and a sealed dust cover for environmental protection. Ideal for automotive, lamp accessories, and industrial automation, it offers long electrical life and operation stability. Order now to upgrade your projects with a trusted relay that combines durability, efficiency, and easy installation, ensuring dependable operation in demanding environments.

Order your Cit Relay series A21ACQ12VDC19D today and give your automotive projects the dependable quality they deserve with quick connect terminals and sealed protection.

Frequently Asked Questions

Where can I buy CIT Relay and Switch A21ACQ12VDC19D?

You can click on the BUY or RFQ button to purchase A21ACQ12VDC19D from an authorized CIT Relay and Switch distributor.

How do I troubleshoot issues or seek technical support for part A21ACQ12VDC19D?

You can download the A21ACQ12VDC19D datasheet or visit the CIT Relay and Switch website for support.

Who is the manufacturer of A21ACQ12VDC19D?

CIT Relay and Switch

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