ERS-07 220V Alternating Load Timer Relay – Dual Channel DIN
ERS-07 220V Alternating Load Timer Relay – Dual Channel DIN
ERS-07 Alternating Load Controller – Dual-Channel Timer Relay with LED Indicators
The ERS-07 Alternating Load Controller is a precision-engineered DIN-rail timer relay designed to manage two separate loads with perfectly balanced, alternating duty cycles. Ideal for industrial automation, DSP delay switch systems, pump alternation, lighting circuits, and any application requiring synchronized sequential switching, this 220V AC relay delivers dependable, hands-free load management.
Key Features
- Dual Load Alternating Control: Automatically switches between two independent loads with equal ON/OFF durations — ensuring balanced wear and consistent operation.
- Wide Adjustable Timing Range: ON and OFF timing is fully adjustable from 1 second to 100 minutes, giving you precise control for virtually any application.
- Visual State Indication: Three built-in LED indicators (including R and L flashing LEDs) let you monitor switch state and operation at a glance — no guesswork required.
- DIN Rail Mounting: Standard DIN rail compatible for quick, tool-friendly panel installation in electrical enclosures.
- Built-in Safety Features: Integrated time relay and breaker circuitry ensure secure, stable operation across a wide range of environments.
- Broad Temperature Range: Rated for operation from -20°C to +55°C, suitable for demanding indoor and outdoor-adjacent installations.
- Compact & Lightweight: Measures just 90 × 17 mm and weighs under 125 g — minimal footprint, maximum function.
Technical Specifications
| Model | ERS-07 |
| Working Voltage | 220VAC / 110VAC (A1– to A2) |
| Frequency | 50 / 60 Hz |
| Operating Power | <5 VA |
| ON Time Range | 1 second to 100 minutes |
| OFF Time Range | 1 second to 100 minutes |
| Contact Rating | 5A / 250V AC (resistive load) |
| Display | 3 LED indicators |
| Connection Type | Terminal connection |
| Mounting Type | DIN rail |
| Ingress Protection | IP20 |
| Operating Temperature | -20°C to +55°C |
| Operating Altitude | <2000 m |
| Cable Cross-section | 2.5 mm² |
| Material | ABS |
| Color | White |
| Size | 90 × 17 mm |
| Weight | <125 g |
Package Contents
- 1 × ERS-07 Alternating Load Timer Relay
Made in Mainland China.
Note: Monitor color settings and ambient lighting may cause slight color variation from photos. Minor measurement deviations are normal.
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Frequently Asked Questions
Q: What does the ERS-07 alternating load controller do?
A: The ERS-07 is a dual-channel timer relay that alternates control between two independent loads. The first load activates for a set duration, then powers off, and the second load activates for the same duration. This cycle repeats automatically, ensuring perfectly balanced operation between the two circuits — ideal for pump alternation, motor cycling, or any sequential switching application.
Q: How do I adjust the timing on the ERS-07 timer relay?
A: The ERS-07 features onboard timing adjustment controls that allow you to set both ON and OFF intervals anywhere from 1 second up to 100 minutes. Simply dial in your desired timing for each phase to match your specific application requirements.
Q: Is the ERS-07 compatible with standard electrical panels?
A: Yes. The ERS-07 uses standard DIN rail mounting, making it fully compatible with most industrial and residential electrical panels and enclosures. Terminal block connections support up to 2.5 mm² cable cross-sections for easy, secure wiring.
Q: What voltages does the ERS-07 alternating relay support?
A: The ERS-07 supports both 220VAC and 110VAC operating voltages at 50/60 Hz, making it suitable for use in both North American and international electrical systems.