Product Model Breakdown
• Bulletin 809S: Single-phase current monitoring relay
• Code C1: Single-phase current monitoring (direct measurement or via current transformers)
• Code 10A: Supports monitoring of loads up to 10A AC/DC
• Code 48: External power supply is 24/48V AC/DC
Key Specifications
Input Characteristics
| Item | Parameter |
| ---- | ---- |
| Monitoring Type | TRMS AC/DC overcurrent/undercurrent monitoring |
| Monitoring Method | Direct measurement via built-in shunt or via current transformers |
| Maximum Load | 10A AC/DC (direct measurement) |
| Power Input | 24/48V AC/DC |
Output Characteristics
| Item | Parameter |
| ---- | ---- |
| Contact Type | (2) Form C (changeover contacts), normally de-energized type |
| Rated Insulation Voltage | 250V AC |
Functional Features
• Time-delay Operation: The relay operates when the measured value exceeds (or falls below) the setpoint and remains beyond the preset time-delay.
• Latching Function: The relay output state can be locked (when enabled).
• Suppression Function: Prevents unnecessary triggering of the relay under non-critical conditions.
• LED Indication: Displays alarm status and relay output status.