The BTA1 is a robust and versatile high-power relay designed for demanding switching applications requiring reliable performance under higher loads. With a contact capacity of 10A and available in 2-pole or 3-pole configurations, it is suitable for industrial control, HVAC, and power distribution systems. The relay features a transparent dust cover, LED status indication, and optional gold-plated contacts for enhanced durability and conductivity.
Key Features:
- High Contact Capacity:10A switching capability
- Contact Forms:2C (DPDT) or 3C (3PDT)
- Transparent Dust Cover:Allows visual inspection while protecting internal components
- LED Indicator:Displays coil ON/OFF status (AC: red, DC: green)
- Optional Gold-Plated Contacts:For improved conductivity and corrosion resistance
- Manual Test Button:Optional for operational testing
- Wide Coil Voltage Range:6–110VDC, 6–240VAC
- Robust Construction:Designed for high electrical and mechanical endurance
Product Parameters Table
Model Description:
| Code | Description |
| BTA1 | Base Model |
| 2C / 3C | Contact Form (2C=DPDT, 3C=3PDT) |
| (Blank) | Contact Load: 10A |
| J / U | Terminal Diagram Type (J=J-line, U=U-line) |
| C | Shell Type (Standard) |
| M | Manual Test Button (Optional) |
| L | LED Indicator (AC=Red, DC=Green) |
Coil Specifications (at 23°C):
| Rated Voltage | Coil Resistance (Ω) |
| 6VDC | 32Ω |
| 12VDC | 120Ω |
| 24VDC | 472Ω |
| 48VDC | 1800Ω |
| 110VDC | 10000Ω |
| 6VAC | 4.2Ω (2C), 6Ω (3C) |
| 12VAC | 18Ω (2C), 21Ω (3C) |
| 24VAC | 72Ω (2C), 85Ω (3C) |
| 48VAC | 280Ω (2C), 350Ω (3C) |
| 110VAC | 1500Ω (2C), 1900Ω (3C) |
| 120VAC | 1700Ω (2C), 2250Ω (3C) |
| 220/230VAC | 6000Ω (2C), 7200Ω (3C) |
| 240VAC | 7200Ω (2C), 9110Ω (3C) |
Note: Maximum withstand voltage = 110% of rated voltage for short periods.
Contact Specifications:
| Parameter | 2C | 3C |
| Resistive Load | 10A @ 30VDC/240VAC; 12A @ 120VAC | 10A @ 30VDC/120VAC/240VAC |
| Motor Load | 1/3 HP @ 120VAC; 1/2 HP @ 240VAC | Same as 2C |
| Switching Power | 300W, 2880VA | Same as 2C |
| Contact Material | AgNi Alloy | AgNi Alloy |
| Initial Contact Resistance | ≤50mΩ | ≤50mΩ |
| Electrical Life | 100,000 operations | 100,000 operations |
| Mechanical Life | 10,000,000 operations | 10,000,000 operations |
General Electrical & Mechanical Parameters:
| Parameter | Value |
| Pickup Voltage (23°C) | DC: ≤80%, AC: ≤85% of rated voltage |
| Release Voltage (23°C) | DC: ≥10%, AC: ≥30% of rated voltage |
| Max. Voltage | 110% of rated voltage |
| Coil Power | DC: 1.2W, AC: 2.0–3.0VA |
| Pickup Time | AC: ≤25ms, DC: ≤20ms |
| Release Time | AC: ≤20ms, DC: ≤15ms |
| Insulation Resistance | 1000MΩ @ 500VDC |
Dielectric Strength (1 min):
| Withstand Voltage Test | Value |
| Between Same Pole Contacts | 1000VAC |
| Between Opposite Pole Contacts | 1500VAC |
| Between Coil and Contact | 1500VAC |
Environmental & Mechanical Specifications:
| Parameter | Value |
| Operating Temperature | –25°C to +65°C (no ice or frost) |
| Humidity | 5% to 85% RH |
| Atmospheric Pressure | 86–106 kPa |
| Vibration Resistance | 10–55Hz, 1.0mm double amplitude |
| Impact Stability | 98 m/s² |
| Impact Strength | 980 m/s² |
Physical Specifications:
| Parameter | 2C | 3C |
| Dimensions (L × W × H) | 35mm × 35mm × 54.9mm | 35mm × 35mm × 54.9mm |
| Weight | Approx. 85g | Approx. 88g |
| Terminal Type | Plug-in (8PIN / 11PIN) | Plug-in (8PIN / 11PIN) |
