ERS-07 Alternating Load Time Relay – 220V AC Dual Load Controller
ERS-07 Alternating Load Time Relay – 220V AC Dual Load Controller
ERS-07 Alternating Load Controller – Dual Load Time Relay for DSP Delay Switch Systems
The ERS-07 Alternating Load Time Relay is engineered for industrial and automation applications that require two separate loads to cycle alternately with perfectly balanced operating times. Operating on 220V AC (or 110V AC), this DIN-rail mounted controller delivers precise, adjustable timing from 1 second to 100 minutes per cycle, making it ideal for pump alternation, motor control, lighting systems, and other dual-load switching setups.
Made in Mainland China.
Key Features
- Dual Load Alternation: Seamlessly switches between two independent loads with equal operating durations, ensuring balanced usage and even wear across both circuits.
- Flexible Timing Range: ON and OFF times are independently adjustable from 1 second to 100 minutes, adapting to a wide range of application requirements.
- Visual LED State Indication: Three onboard LEDs (R and L flashing indicators) provide clear real-time monitoring of relay state and switch operation — no guesswork required.
- DIN Rail Mounting: Standard DIN rail compatibility allows fast, secure installation in control panels and enclosures.
- Built-in Time Relay & Breaker: Integrated protection components ensure safe, stable operation across supported environments.
- Wide Temperature Range: Operates reliably from -20°C to +55°C, suited for demanding industrial conditions.
- Easy Maintenance: Simple swab cleaning keeps the unit performing long-term without risking component damage.
Technical Specifications
| Model | ERS-07 |
| Working Voltage | 220V AC or 110V AC |
| Operating Frequency | 50/60 Hz |
| Operating Power | <5 VA |
| ON / 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 |
| Material | ABS Plastic |
| Color | White |
| Size | 90 × 17 mm |
| Weight | <125 g |
| Cable Cross-section | 2.5 mm² |
Package Contents
- 1 × ERS-07 Time Relay / Load Controller
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Note: Actual color may vary slightly from images due to monitor brightness and display settings. Please allow minor measurement deviations of ±1–2 mm.
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Frequently Asked Questions
Q: What is the ERS-07 alternating load controller used for?
A: The ERS-07 is a dual-load time relay designed to alternate operation between two independent electrical loads — such as two pumps, motors, or lighting circuits — with equal ON and OFF durations. It is commonly used in industrial automation, DSP delay switch systems, and any application requiring balanced load cycling.
Q: Can the ERS-07 work with both 110V and 220V AC systems?
A: Yes. The ERS-07 supports both 220V AC and 110V AC operating voltages at 50/60 Hz, making it compatible with a wide range of electrical systems in different regions.
Q: How do I adjust the timing on the ERS-07 load controller?
A: The ON and OFF times are independently adjustable from as short as 1 second up to 100 minutes per cycle. This flexible range allows the relay to be configured for everything from rapid switching tasks to long-duration alternation schedules.
Q: How is the ERS-07 mounted and installed?
A: The ERS-07 uses standard DIN rail mounting, making it straightforward to integrate into existing control panels or electrical enclosures. Connections are made via terminal blocks, and the unit supports cable cross-sections up to 2.5 mm².