Why Choose the Mersen 83230509 Surge Protection Device?

The Mersen 83230509 is a compact and dependable Type 2+3 surge protection device (SPD) designed to protect sensitive electrical and electronic equipment from transient overvoltages. As part of the Mersen Surge-Trap Monobloc STMT23 series, this slim DIN rail mounted SPD provides reliable protection for low voltage power and control systems used in industrial automation, commercial installations and machinery.

Designed to protect against switching surges and indirect lightning effects, the STMT23 series combines effective surge protection with a space-saving monobloc construction. Its one-module format makes it ideal for electrical enclosures where panel space is limited, while its remote indication capability supports practical condition monitoring.

With a 6 kA maximum discharge current, 60 V nominal operating voltage and 75 V maximum continuous operating voltage, the 83230509 is suitable for 1Ph+N TT and TN-S systems. It offers dependable protection for control equipment, power supplies, communication systems and other sensitive electronic devices.

Key Advantages

• Compact Type 2+3 surge protection device for sensitive electrical equipment.
• 6 kA Imax discharge rating for transient overvoltage protection.
• 60 V nominal operating voltage with 75 V maximum continuous operating voltage.
• Slim one-module DIN rail mounting saves valuable enclosure space.
• Suitable for 1Ph+N TT and TN-S systems.
• Remote indication supports status monitoring and planned maintenance.

Key Features

• Mersen Surge-Trap Monobloc STMT23 series.
• Type 2+3 / Class II + III surge protection.
• 6 kA maximum discharge current Imax (8/20 µs).
• 3 kA nominal discharge current.
• 60 V nominal operating voltage.
• 75 V maximum continuous operating voltage.
• 2-pole slim monobloc construction.
• Microswitch remote indication for end-of-life monitoring.

Technical Specifications

• Manufacturer: Mersen
• Series: Surge-Trap Monobloc STMT23
• Model: STMT23-6K75V-SP-SM
• Item number: 83230509
• Product type: Surge protection device
• SPD type: Type 2+3 / Class II + III
• Maximum discharge current: 6 kA Imax (8/20 µs)
• Nominal discharge current: 3 kA
• Nominal operating voltage: 60 V
• Maximum continuous operating voltage: 75 V
• Protection modes: L-N / L-PE
• System configuration: TT / TN-S
• Number of poles: 2 poles
• Format: Slim monobloc, 1 module
• Mounting type: DIN rail mounting
• Indication: Microswitch remote indication
• Short circuit withstand: 10 kA
• EAN / UPC: 8435297850489

Reliable Surge Protection for Sensitive Equipment

Surge protection devices help limit transient overvoltages before they reach connected equipment. This helps reduce the risk of damage to industrial control systems, communication equipment, power supplies and automation hardware while supporting dependable system operation.

The Mersen STMT23 range is engineered for demanding electrical installations where compact dimensions, reliable surge performance and straightforward DIN rail installation are essential. Its slim format makes the 83230509 well suited to modern control panels and distribution boards.

Typical Applications

• Industrial automation and control panels.
• Power supplies and PLC systems.
• Communication and networking equipment.
• Commercial electrical installations.
• Water treatment and process control systems.
• Sensitive electronic equipment and instrumentation.

Trusted by Electrical Engineers Worldwide

Mersen Surge-Trap surge protection devices are trusted by panel builders, OEMs and electrical engineers to protect critical equipment from damaging transient overvoltages.