Asset Protection

Asset protection surge devices safeguard electrical installations from voltage transients caused by lightning strikes, utility switching events, and internal electrical disturbances. Licensed electricians and electrical contractors rely on these surge protective devices (SPDs) to prevent costly equipment damage, minimize downtime, and extend the service life of sensitive electrical systems in residential, commercial, and industrial projects.​

iSupply Electrical stocks a comprehensive range of OBO Bettermann surge protection devices including Type 1, Type 2, and Type 1+2 combination units designed to meet Australian installation standards. These devices protect critical infrastructure by diverting surge currents to ground before they reach sensitive equipment, ensuring operational continuity and compliance with AS/NZS 1768 and AS/NZS 3000 requirements.​

Our asset protection range features surge devices rated from 20kA to 125kA discharge capacity, available in single-pole (1P), three-pole (3P), and neutral configurations with optional sensor monitoring for real-time protection status. Type 1+2 combination SPDs provide comprehensive protection suitable for installation at main switchboards, while Type 2 devices offer cost-effective protection for distribution boards and sub-circuits. Replaceable cartridge systems allow for economical maintenance without complete device replacement, reducing long-term operational costs for electrical contractors.​

Professional electricians working on multi-dwelling developments, commercial fit-outs, and industrial installations require reliable surge protection to protect investments in automation systems, data networks, and process control equipment. Lightning-related damage costs Australian businesses significantly each year, making properly specified surge protection a cost-effective insurance against equipment failure and project delays. Browse our complete circuit protection range for complementary overcurrent and fault protection solutions.​

---

FAQs

What is the difference between Type 1 and Type 2 surge protection devices?

Type 1 SPDs are designed for installation at the main service entrance between the transformer and service disconnect, providing protection against direct lightning strikes with discharge capacities up to 125kA (10/350μs waveform). Type 2 SPDs install downstream of the service disconnect at distribution boards, protecting against residual lightning energy and internally generated surges with lower discharge ratings suited to secondary protection. Type 1+2 combination devices offer both capabilities in a single unit, simplifying installation at main switchboards.​

Are surge protection devices mandatory in Australian electrical installations?

While Australia has no mandatory SPD certification requirement, AS/NZS 1768 provides risk assessment guidelines for determining appropriate surge protection placement and ratings. AS/NZS 3000 outlines installation requirements when SPDs are specified, and certain commercial, industrial, and insurance-driven applications increasingly require surge protection for compliance and asset protection. Licensed electricians should conduct site-specific risk assessments to determine optimal protection strategies.​

How do I select the correct surge protection device for my project?

Selection depends on installation location, risk zone classification, and protected equipment sensitivity. Main switchboards in lightning-prone areas require Type 1 or Type 1+2 SPDs rated for direct strike protection, while distribution boards benefit from Type 2 devices. Consider maximum continuous operating voltage (MCOV), discharge current rating, protection level (voltage limiting characteristics), and whether single-phase or three-phase protection is required. For rural or exposed properties, cascading protection using multiple SPD types provides comprehensive coverage.​

What maintenance do surge protection devices require?

OBO Bettermann SPDs with sensor monitoring provide visual indication of protection status, alerting electricians when modules require replacement. Devices with replaceable cartridges allow cost-effective renewal after surge events without replacing entire units. Regular inspection of indicator lights, thermal disconnects, and connection integrity ensures continued protection. SPDs protect equipment from multiple surge events over many years, automatically returning to standby mode after each transient event.​

Can surge protection devices prevent all electrical damage?

SPDs significantly reduce risk by diverting surge currents to ground before reaching protected equipment, but work most effectively as part of a coordinated protection strategy including proper earthing, equipotential bonding, and appropriate circuit protection devices. Cascaded protection using Type 1 at service entrance, Type 2 at distribution boards, and Type 3 at point-of-use provides optimal coverage. Proper installation per AS/NZS 3000 by licensed electricians ensures maximum effectiveness and compliance.​