Multispan ELR-35 Earth Leakage Relay | 30mA–30A | DIN Rail Mount | Test & Reset
Multispan ELR-35 Earth Leakage Relay – 30mA to 30A DIN Rail Mounted ELR
A compact DIN-rail Earth Leakage Relay with 30 mA–30 A adjustable sensitivity, fast tripping response, Test/Reset functions, and LED fault indication for reliable protection of electrical panels and machinery.
The Multispan ELR-35 Earth Leakage Relay is designed to detect and trip on ground leakage currents ranging from 30 mA to 30 A, ensuring enhanced safety in LT panels, MCCs, pump starters, DG panels, and industrial automation systems. With fast response time, test/reset functionality, LED status indications, and DIN-rail mounting, it fits seamlessly into modern electrical installations.
Key Features
Adjustable Leakage Sensing Range: 30 mA to 30 A (wide protection flexibility)
35mm DIN Rail Mounting: Quick installation in control panels
Relay Output: 1 potential-free relay for tripping MCCBs/Contactors
LED Indicators:
Green – Healthy/ON
Red – Leakage Trip
Built-In Controls: TEST button for simulation & RESET button for clearing faults
Fast Leakage Trip Response to minimize shock and fire hazards
Operating Voltage: 230V AC ±20%
Relay Rating: 5A at 230V AC (resistive)
Flame-Retardant ABS Housing for industrial durability
Compact Size: Ideal for LT panels and automation cabinets
Technical Specifications (Table)
| Parameter | Specification |
|---|---|
| Model | Multispan ELR-35 |
| Leakage Sensitivity | 30 mA to 30 A (selectable) |
| Mounting | 35 mm DIN rail |
| Output | 1 Relay, 5A at 230V AC (resistive) |
| Operating Voltage | 230V AC ±20% |
| Indications | Green – Healthy, Red – Leakage Trip |
| Controls | TEST & RESET buttons |
| Response Time | Fast tripping on leakage detection |
| Housing Material | Flame-retardant ABS |
| Application Areas | LT panels, MCCs, pump starters, DG panels |
| Operating Temperature | 0°C to 55°C |
Applications
Motor Control Centers (MCCs)
Pump Starter Panels
LT & Distribution Boards
AMF/DG Panels
Residential & commercial protection circuits
Industrial machinery earth-fault monitoring
Automation systems requiring leakage detection
What’s in the Box?
1 × Multispan ELR-35 Earth Leakage Relay
Mounting guide & wiring diagram
Warranty & safety notes
FAQ
Q1. What leakage range can ELR-35 detect?
It supports 30mA to 30A, suitable for both low-sensitivity and high-load protection.
Q2. Is ELR-35 DIN-rail mounted?
Yes, it fits onto a 35 mm DIN rail, making it easy to install.
Q3. Does it include TEST and RESET functions?
Yes, both functions are built-in for maintenance and troubleshooting.
Q4. What happens when leakage occurs?
The relay trips and can disconnect the load via MCCB or contactor.
Q5. Where can the ELR-35 be used?
In MCCs, pump panels, LT distribution boards, DG panels, and automation machinery.
Q6. Does ELR-35 require a separate CBCT (Core Balance CT)?
Yes, a CBCT is required; selection depends on cable size and leakage sensitivity.