Description
KAEL HSR.G Hydrophore Pump Sequencing Relay
The KAEL HSR.G is a multifunction hydrophore pump sequencing relay designed for water pressure booster systems that use two or three pumps. It manages the sequence of pump operation according to connected pressure-switch inputs, helping distribute operating time among pumps rather than relying on the same pump continuously.
This relay is suitable for control panels used in building water supply and other compatible booster pump installations where alternating pump operation is required.
Key Features
– **Two operating modes:** Select operation for two or three pumps.
– **Adjustable sequencing time:** Set the operating interval from 1 to 100 minutes.
– **Pressure-switch inputs:** Supports the P1, P2 and P3 inputs according to the selected operating mode.
– **Pump output control:** Provides H1, H2 and H3 outputs for the corresponding pump control circuits.
– **Wide supply-voltage range:** Operates on 85–265 V AC/DC according to the manufacturer’s technical documentation.
– **Compact installation:** Designed for mounting on a connection rail inside an electrical control panel.
Technical Specifications
| Specification | Manufacturer-listed value |
|—|—|
| Brand | KAEL |
| Model | HSR.G |
| Product type | Multifunction hydrophore sequencing relay |
| Operating modes | 2-pump or 3-pump |
| Adjustable operating interval | 1–100 minutes |
| Supply voltage | 85–265 V AC/DC |
| Frequency | 50/60 Hz |
| Contact capacity | Maximum 5 A at 250 V AC |
| Power consumption | Less than 4 VA |
| Protection class | IP20 device; IP00 connector |
| Ambient temperature | -20°C to +60°C |
| Dimensions | 18 × 90 × 65 mm |
| Mounting | Connection rail inside an electrical panel |
Specifications are based on the KAEL HSR.G manufacturer documentation. Verify the wiring diagram and installation requirements for the exact unit before connecting it to a pump control system.
How the Hydrophore Sequencing Relay Works
The HSR.G receives signals from the connected pressure switches and controls the pump outputs in sequence. Its selected operating mode determines whether the system uses two or three pumps. The adjustable time interval helps share operating time between the available pumps while responding to the pressure-switch control arrangement.
Correct pressure-switch settings and wiring are essential for the intended sequence. Installation should follow the manufacturer’s connection diagram and be completed by a qualified electrical technician.
Typical Applications
– Building water pressure booster systems
– Residential and commercial water supply installations
– Multi-pump hydrophore systems
– Electrical control panels for pump installations
– Compatible water pressure systems requiring sequential pump operation
Application suitability depends on the pump contactor arrangement, pressure-switch configuration and electrical ratings of the installation.
Buying the KAEL HSR.G in the UAE
Dynavation Star Electrical Fittings Trading LLC supplies electrical and industrial control products to customers across the UAE. Before ordering, confirm that the KAEL HSR.G matches your required supply voltage, pump count, contactor arrangement and control-panel wiring.
**Contact Dynavation Star on WhatsApp for the latest price and availability.**

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