TDK HighE Series Metal Oxide Varistor, 2.9 nF, 300 A, 650 V Clamping Voltage, 390 V Varistor Voltage B72240B0251K001

TDK B72240B0251K001 is a HighE series metal oxide varistor engineered to deliver high-performance surge suppression. This industrial-grade varistor features a capacitance of 2.9 nF, a high clamping current capability of 300 A, and is suitable for a maximum surge current of up to 40 kA. With a clamping voltage of 650 V and a varistor voltage of 390 V, it safeguards sensitive electronic components from damaging voltage spikes in demanding industrial and electronic environments.

Heavy duty surge protection for a wide range of applications, including industrial equipment, automation systems, and power supply units. Chassis mount configuration with robust screw terminals for secure and reliable installation in control panels or machinery.

Flame-retardant plastic enclosure (UL 94 V-0) and potting provide an added layer of protection, ensuring operational safety in harsh conditions. Compliant with CSA and UL approvals, supporting safe integration in global industrial systems.

Wide operating temperature range from -40°C to 85°C for dependable year-round performance. Energy rating of 490 J makes it ideal for protecting equipment experiencing repetitive voltage transients.

The varistor comes in a disk-shaped form factor with dimensions of 40 mm diameter, 60 mm length, and 14 mm thickness. It is intended for bulk packaging and is easy to install in existing assemblies. The lead pitch of 24 mm is suitable for robust mechanical connection. Common applications include surge and transient voltage protection in power distribution, telecommunications, automation, and industrial control systems.

TDK’s HighE Series varistors are renowned for their outstanding ability to handle both high surge energies and repeated transient events. They are designed for use in challenging contexts such as industrial automation, renewable energy systems, HVAC, commercial power protection panels, water treatment facilities, and heavy equipment control rooms. The product’s plastic encapsulation and flame-retardant rating make it a preferred choice for demanding installations where longevity and reliability are critical.

High surge handling for critical infrastructure and industrial facilities. Clamping current of 300 A supports the mitigation of repetitive high-energy transients.

For engineers and procurement professionals seeking reliable surge protection, the B72240B0251K001 offers an optimal combination of performance, regulatory compliance, and mechanical durability.

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