The BTA2G is a permanent magnetic latching relay designed for applications where energy efficiency and maintained state without continuous power are essential. Utilizing a magnetic latching mechanism, the relay remains in its last switched position without requiring a constant coil supply, reducing power consumption and heat generation. Available in single- or double-coil configurations and with gold-plated contacts for reliability, it is ideal for energy management systems, smart meters, backup power controls, and other applications where state retention is critical.
Key Features:
- Magnetic Latching:Maintains position without continuous power
- Double-Coil or Single-Coil Design:For set/reset operation or pulsed control
- High Contact Capacity:10A switching
- Contact Forms:1C (SPDT) or 2C (DPDT)
- Gold-Plated Contacts:Enhanced conductivity and durability
- Manual Test Button:Allows circuit testing without coil power
- LED Indicator:Shows relay status (AC: red, DC: green)
- Multiple Housing Options:Standard, side flange, top flange, and clamp rail housings
- Wide Coil Voltage Range:6–110VDC, 6–240VAC
Model Description:
| Code | Description |
| BTA2G | Base Model – Magnetic Latching |
| 1C / 2C | Contact Form (1C=SPDT, 2C=DPDT) |
| (Blank) | Contact Load: 10A |
| S1 / S2 | Terminal Type (S1:4.8×0.8mm, S2:4.8×0.5mm) |
| C / C1 / C3 / C4 | Shell Type (C=Standard, C1=Side Flange, C3=Top Flange, C4=Clamp Rail) |
| L | LED Indicator (AC=Red, DC=Bipolar Green) |
| S | Single Coil |
| D | Double Coil |
Coil Specifications (at 23°C):
| Coil Type | Rated Voltage | Coil Resistance (Ω) – 1C/2C | Pickup/Release Voltage |
| DC Double Coil | 6VDC | 22Ω ±10% | ≤75% |
| 12VDC | 90Ω ±10% | ≤75% | |
| 24VDC | 350Ω ±10% | ≤75% | |
| 48VDC | 1400Ω ±10% | ≤75% | |
| 110VDC | 9000Ω ±10% | ≤75% | |
| AC Single Coil | 6VAC | 32Ω ±10% | ≤80% |
| 12VAC | 120Ω ±10% | ≤80% | |
| 24VAC | 472Ω ±10% | ≤80% | |
| 48VAC | 1800Ω ±10% | ≤80% | |
| 120VAC | 10000Ω ±10% | ≤80% | |
| 240VAC | 40000Ω ±10% | ≤80% | |
| DC Single Coil | 6VDC | 32Ω ±10% | ≤75% |
| 12VDC | 120Ω ±10% | ≤75% | |
| 24VDC | 472Ω ±10% | ≤75% | |
| 48VDC | 1800Ω ±10% | ≤75% | |
| 110/125VDC | 9000Ω ±10% | ≤75% |
Note: Maximum withstand voltage = 110% of rated voltage for short periods.
Contact Specifications:
| Parameter | 1C | 2C |
| Resistive Load | 10A @ 28VDC, 120/240/277VAC | Same as 1C |
| Motor Load | 1/3 HP @ 120VAC; 1/2 HP @ 240VAC | Same as 1C |
| Switching Power | 448W, 4432VA | Same as 1C |
| Contact Material | AgSnO₂ Alloy | AgSnO₂ 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: ≤80%, AC: ≤85% of rated voltage |
| Max. Voltage | 110% of rated voltage |
| Coil Power | DC: 1.2–1.64W, AC: 2.0–3.0VA |
| Pickup Time | AC: ≤30ms, DC: ≤20ms |
| Release Time | AC: ≤30ms, DC: ≤20ms |
| 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 | –30°C to +65°C |
| 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 | 1C | 2C |
| Dimensions (L × W × H) | 35mm × 35mm × 53mm | 35mm × 35mm × 53mm |
| Weight | Approx. 88g | Approx. 90g |
| Terminal Type | Plug-in | Plug-in |
