Onesto 275V 10kA AC 2 Pole Surge Arrestor
R 542,95
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Tracked since 23 Oct 2026.
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Product Overview
The Onesto 275V 10kA AC 2 Pole Surge Arrestor is a DIN rail surge protection device for use in compatible AC electrical installations. Model BY7-10/2-275 provides a two-pole configuration with a maximum continuous operating voltage of 275 V and a maximum surge current rating of 10 kA.
Key Features
- Two-pole configuration for installations requiring a two-pole surge protection device.
- 275 V maximum continuous operating voltage for selection against the electrical system requirements.
- 10 kA maximum surge current rating.
- DIN rail mounting suits compatible distribution board layouts.
- Indication window provides a visual device status check.
Applications
- Surge protection in compatible AC distribution boards.
- Domestic and commercial electrical installations where the specified ratings and configuration meet the installation design.
- AC circuits associated with backup power installations, subject to the electrician’s system design.
Why Choose This Product?
This Onesto surge arrestor provides a two-pole option in the existing Onesto protection range, with DIN rail mounting and a visual indication window for practical distribution board installation and inspection.
Important Notes
- Installation and device selection must be completed by a qualified electrician using the manufacturer’s wiring instructions.
- This is an AC surge protection device. Do not use it as a DC solar PV surge arrestor.
- Confirm the earthing arrangement, required backup protection, connection sizes and coordination with other surge protection devices before installation.
- The 10 kA rating is a surge current rating, not the continuous load current or a circuit breaker rating.
- Surge protection does not replace overload, short-circuit or earth leakage protection.
Technical Specifications
Specification Detail Brand Onesto Model BY7-10/2-275 Product Type AC surge arrestor Number of Poles 2 Maximum Continuous Operating Voltage (Uc) 275 V Maximum Surge Current (Imax) 10 kA Mounting DIN rail Status Indication Indication window Pack Size 1Reviews
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