Product Overview
The TR161-40A is a high-performance 12 volt 40 amp relay designed by Mingni Tech for heavy-duty switching applications. With 40A contact rating and 277VAC maximum switching voltage, this power relay is perfect for automotive and industrial motor control systems. Features AgSnO₂ contact material for enhanced durability.
Features
- High Current Capacity: Rated for 40A/277VAC loads with maximum switching current of 40A, ideal for high-power applications.
- Compact Design: Space-saving dimensions of 30×15.6×20.5mm for easy integration in control panels.
- Fast Response: Pickup time ≤20ms, release time ≤10ms for precise control timing.
- Extended Lifespan: 1,800 operations at 40A/250VAC and 10,000 operations at 30A/250VAC.
Technical Specifications of 12 volt 40 amp relay
Contact Parameters
| Parameter | Specification |
|---|---|
| Rated Load | 40A 277VAC |
| Max. Switching Current | 40A |
| Max. Switching Voltage | 277VAC |
| Max. Switching Power | 11,080VA |
| Contact Resistance | ≤1.5mΩ (at 12VDC 1A) |
| Contact Material | AgSnO₂ (AgNi available) |
Coil Parameters (Standard 0.9W Type)
| Rated Voltage (VDC) | Coil Resistance (Ω) | Max. Pickup Voltage (VDC) | Min. Release Voltage (VDC) |
|---|---|---|---|
| 5 | 27.8×(1±10%) | ≤3.50 | ≥0.5 |
| 12 | 160×(1±10%) | ≤8.40 | ≥1.2 |
| 24 | 640×(1±10%) | ≤16.8 | ≥2.4 |
Performance Characteristics
| Parameter | Specification |
|---|---|
| Insulation Resistance | ≥1,000MΩ (at DC500V) |
| Dielectric Strength | Between contacts: 1000VAC 1min Coil to contacts: 4500VAC 1min |
| Creepage Distance | 10mm |
| Vibration Resistance | 10~55Hz, 1.5mm amplitude |
| Shock Resistance | 100G minimum |
| Operating Temperature | -40℃ to +85℃ |
| Humidity Range | 5% to 85% RH |
| Insulation Class | Class F |
Typical Applications
This 12 volt 40 amp relay automotive relay is widely used in:
- Automotive electrical systems
- Industrial motor controls
- HVAC and refrigeration equipment
- Power distribution systems
- Automation equipment
- Heavy-duty power tools
- Battery management systems
Quality Certifications
ISO9001
ISO/TS16949
ISO14001
OHSAS18001
IECQ QC 080000
All products undergo rigorous testing to ensure compliance with international standards for reliable performance.
Important Notes
- Coil current and resistance values are measured at 23°C with ±10% tolerance.
- Operate and release voltages are specified at 23°C coil temperature.
- Maximum allowed voltage is the upper limit that can be applied to the coil.
- Ensure secure connections to prevent overheating at high current.
- For humid or corrosive environments, recommend plastic sealed (S) version.
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