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Relays Explained: Signal vs. Power and Latching vs. Non-Latching

In this video, we break down how relays work, explore the differences between signal and power relays, and explain when to use latching vs non-latching designs. We also walk through a live demo showing the internal movement of a relay in action, helping visualize how electrical signals translate into mechanical switching.

9/22/2026 8:05:03 PM Share

Part List

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
RELAY GEN PURPOSE SPDT 15A 5VPR12-5V-360-1CRELAY GEN PURPOSE SPDT 15A 5V1660 - Immediate$1.33View Details
RELAY GEN PURPOSE SPDT 15A 12VPR12-12V-360-1CRELAY GEN PURPOSE SPDT 15A 12V163 - Immediate$1.33View Details
RELAY GENERAL PURPOSE SPDT 1A 3VSR5-3V-200-1CRELAY GENERAL PURPOSE SPDT 1A 3V375 - Immediate$1.57View Details
RELAY GEN PURPOSE SPDT 1A 12VSR5-12V-200-1CRELAY GEN PURPOSE SPDT 1A 12V0 - Immediate$1.57View Details
RELAY GEN PURPOSE SPST 10A 3VPR30-3V-450-1A-ERELAY GEN PURPOSE SPST 10A 3V1614 - Immediate$1.69View Details
RELAY GEN PURPOSE SPDT 15A 5VPR25-5V-S-360-1C-ERELAY GEN PURPOSE SPDT 15A 5V664 - Immediate$1.80View Details
RELAY GEN PURPOSE SPDT 1A 12VSR7-12V-200-1CRELAY GEN PURPOSE SPDT 1A 12V1101 - Immediate$1.80View Details
RELAY GENERAL PURPOSE SPDT 1A 5VSR7-5V-200-1CRELAY GENERAL PURPOSE SPDT 1A 5V996 - Immediate$1.80View Details
RELAY GEN PURPOSE SPDT 1A 24VSR7-24V-200-1CRELAY GEN PURPOSE SPDT 1A 24V1628 - Immediate$1.83View Details
RELAY GENERAL PURPOSE DPDT 1A 5VSR11-5V-200-2CRELAY GENERAL PURPOSE DPDT 1A 5V689 - Immediate$2.02View Details
RELAY GEN PURPOSE DPDT 1A 12VSR11-12V-200-2CRELAY GEN PURPOSE DPDT 1A 12V247 - Immediate$2.02View Details
RELAY GENERAL PURPOSE SPDT 1A 5VSR3-5V-150-1CRELAY GENERAL PURPOSE SPDT 1A 5V270 - Immediate$2.02View Details
RELAY GENERAL PURPOSE SPDT 1A 5VSR5-5V-200-1CRELAY GENERAL PURPOSE SPDT 1A 5V1742 - Immediate$2.12View Details
RELAY GEN PURPOSE DPDT 1A 24VSR11-24V-200-2CRELAY GEN PURPOSE DPDT 1A 24V848 - Immediate$2.14View Details
RELAY GEN PURPOSE SPST 16A 5VPR9-5V-200-1ARELAY GEN PURPOSE SPST 16A 5V449 - Immediate$2.21View Details
RELAY GEN PURPOSE SPDT 1A 24VSR5-24V-200-1CRELAY GEN PURPOSE SPDT 1A 24V389 - Immediate$2.27View Details
RELAY GEN PURPOSE SPDT 10A 5VPRL3-5V-DC-1CRELAY GEN PURPOSE SPDT 10A 5V377 - Immediate$2.58View Details
RELAY GEN PURPOSE SPST 30A 12VPR23-12V-900-1ARELAY GEN PURPOSE SPST 30A 12V1478 - Immediate$2.79View Details
RELAY GEN PURPOSE SPST 40A 24VPR24-24V-900-1ARELAY GEN PURPOSE SPST 40A 24V906 - Immediate$2.99View Details
RELAY GEN PURPOSE DPDT 5A 24VPR16-24V-540-2CRELAY GEN PURPOSE DPDT 5A 24V1533 - Immediate$3.15View Details

Related Product Highlight

Latching Power Relays Same Sky single- or double-coil latching power relays are ideal for high-level current switching with maximum switching currents from 10 A up to 20 A.
Power Relays Same Sky power relays are ideal for high-level current switching with max switching currents from 5 A up to 40 A.
Relay Solutions Same Sky signal and power relays are ideal for low-level and high-level current switching with maximum switching currents from 2 A up to 40 A.

Related Articles and Blogs

Understanding the Difference Between Latching and Non-Latching Relays Relays are a foundational component in electronic systems, enabling reliable control of circuits across industrial, commercial, and consumer applications.
The Role of Power Relays in Reliable HVAC System Design Power relays form the electrical boundary between the high-power loads that perform real work in HVAC systems and the low-voltage control electronics.
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