| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Finder Relays, Inc. |
RLY PWR DPDT 15A 36VDC |
0 |
|
|
Finder Relays, Inc. |
RLY 4PDT 12A 120V AC |
0 |
|
|
Finder Relays, Inc. |
RLY 4PDT 7A 110V AC |
0 |
|
|
Finder Relays, Inc. |
RLY GEN PURP SPDT 10A 6VDC |
0 |
|
|
Finder Relays, Inc. |
RLY GP 3PDT 10A 120VAC |
0 |
|
|
Finder Relays, Inc. |
RLY PWR 1NO+1NC 20A 240VAC |
0 |
|
|
Finder Relays, Inc. |
RLY LP DPDT 8A 12VDC |
0 |
|
|
Finder Relays, Inc. |
PWR RLY SPST-NO 20A 24VAC |
0 |
|
|
Finder Relays, Inc. |
MASTERPLUS RLY SPDT 6A 24V |
583 |
|
|
Finder Relays, Inc. |
RLY 4PDT 7A 240V AC |
0 |
|
|
Finder Relays, Inc. |
RLY 4PDT 7A 24V DC |
0 |
|
|
Finder Relays, Inc. |
RLY PWR 3PDT 15A 24VDC |
0 |
|
|
Finder Relays, Inc. |
RLY DPDT 12A 120V AC |
0 |
|
|
Finder Relays, Inc. |
RLY GEN PURP DPST-NO 8A 24VAC |
0 |
|
|
Finder Relays, Inc. |
RLY GP 3PDT 10A 240VAC |
0 |
|
|
Finder Relays, Inc. |
RELAY SPDT 16A 230V |
106 |
|
|
Finder Relays, Inc. |
RLY DPDT 8A 24V DC |
0 |
|
|
Finder Relays, Inc. |
SPDT MODULE 12VDC |
0 |
|
|
Finder Relays, Inc. |
RLY 3PDT 10A 12V DC |
0 |
|
|
Finder Relays, Inc. |
RLY GEN PURP SPDT 16A 60VDC |
0 |
|
Power relays with switching capabilities over 2 amps are electromechanical or solid-state devices designed to control high-current electrical circuits through low-power signals. These components play a critical role in modern automation systems, industrial machinery, and energy management solutions by enabling safe and reliable control of heavy loads. Their importance stems from their ability to isolate control circuits from high-power circuits, ensuring operational safety and system longevity in demanding applications.
| Type | Functional Features | Application Examples |
|---|---|---|
| Electromagnetic Relays | Mechanical switching via magnetic coil activation, typical current range 2-20A | Industrial machinery control systems |
| Solid-State Relays (SSR) | Semiconductor-based switching with zero-noise operation, 2-100A capacity | Temperature control in manufacturing equipment |
| High-Power Relays | Heavy-duty contacts with reinforced insulation, 10-100A+ ratings | Electric vehicle charging stations |
| PCB Mount Relays | Miniaturized designs for printed circuit board integration, 2-15A | Smart home automation systems |
| Panel Mount Relays | Rail-mountable industrial grade units with visual contact indicators | Factory automation control panels |
Standard power relays above 2A typically consist of: - Electromagnetic System: Copper coil wound around laminated iron core - Contact Assembly: Silver alloy contacts (AgSnO2 or AgCdO) with arc suppression - Magnetic Circuit: Optimized flux path design with magnetic shielding - Encapsulation: Flame-retardant thermoplastic housing (UL94 V-0 rated) - Terminals: Screw-type or quick-connect terminals (250V/16A rating minimum)
| Parameter | Typical Range | Importance |
|---|---|---|
| Rated Current | 2-100A | Determines load handling capability |
| Switching Voltage | 5-600V AC/DC | Defines circuit compatibility |
| Coil Voltage | 3-250V | Affects control circuit design |
| Contact Material | AgSnO2, AgCdO | Impacts wear resistance and contact resistance |
| Electrical Life | 10^5 - 10^6 operations | Dictates maintenance intervals |
| Mounting Type | PCB, Panel, DIN Rail | Impacts system integration |
| Operating Temp | -40 C to +85 C | Defines environmental tolerance |
Key industries utilizing these relays include: - Industrial Automation: PLC-controlled assembly lines, CNC machines - Energy Systems: Smart grid relays, solar inverters - Transportation: EV battery management, railway signaling - Building Systems: HVAC control, emergency lighting - Consumer Electronics: High-power home appliances
Case Study: In automotive production lines, 30A power relays control robotic arm actuators, with solid-state variants managing precise welding current switching.| Manufacturer | Product Series | Key Features |
|---|---|---|
| Omron | MY2 AC-DC | 10A rating, LED status indicator, 5kV isolation |
| Schneider Electric | LC1D09 | 9-32A adjustable range, 660V withstand voltage |
| TE Connectivity | Potter & Brumfield | 80A high-power relays with silver contacts |
| Siemens | 3RT10 | Industrial SSRs with 0.1ms response time |
| Phoenix Contact | PSR-SCP | Plug-in power relays with diagnostic LEDs |
Key selection criteria: - Load Type: Resistive vs. inductive loads require different derating factors (inductive loads need 20-30% capacity margin) - Environmental Factors: Humidity, vibration, and temperature extremes affect reliability - Switching Frequency: High-cycle applications (>1000 ops/hr) require silver-palladium contacts - Agency Approvals: Check for UL, CSA, or IEC certifications - Installation Space: PCB size constraints vs. panel-mount accessibility
Recommendation: For 12V DC motor control in outdoor equipment, select a sealed 15A relay with IP67 rating and gold-plated contacts.Emerging developments include: - Miniaturization: 30% size reduction in 5A relays (2020-2023) - Smart Integration: Relays with embedded IoT communication modules - Energy Efficiency: Coil power consumption below 0.2W for 10A relays - Material Innovation: Cadmium-free contact materials (EU RoHS compliance) - Hybrid Solutions: Electromechanical relays with integrated solid-state pre-switching - Predictive Maintenance: Relays with built-in wear-out sensors and lifetime monitoring