The Crouse-Hinds series MTL SD range is a series of surge protection devices combining unparalleled packing densities, application versatility, proven reliable hybrid circuitry, simple installation and optional ‘loop disconnect’ facilities – features which make the range the ultimate surge protection solution for process equipment, I/O systems and communications networks. 

The exceptionally high packing densities are the consequence of an ultra-slim footprint for individual modules which can thus “double-up” as feedback terminals. Each module provides full hybrid surge protection for 2 and 3 wire loop protection.

SDX models

Available in 7V, 16V, 32V and 55V versions (SD07X, SD16X, SD32X and SD55X respectively) are suitable for a wide range of applications including THCs, 4-20mA loops, shut-down systems and fire and gas detectors.

SD models

In addition to the many beneficial features offered by SDX devices, the SD variants fuse/disconnect package provides both fused protection against fault currents and a convenient method of isolating field circuitry from protected circuitry without needing additional disconnect terminals. Also provided is a third connection on the field and safe side of the protector in order to terminate screens safely to earth.

SDR models

Specially designed to meet the requirements for high speed data links with an extremely high bandwidth. SDR units are available in a range of voltage variants enabling a wide range of communication systems to be protected e.g. RS232, RS422, RS485, Bus powered systems etc. These devices are classed as simple apparatus and can therefore be used in hazardous areas without affecting the certification of the circuit.

SD32T3, SDRTD, SDR3 models

This range of SD surge protectors offer excellent levels of protection over all three wires in conjunction with minimal footprint requirements. This is the most compact 3-wire surge protector on the market.

Model No.
SD07MXX-BDN
SD07MXX-BDG
SD07MXX-BCN
SD07MXX-BCG
SD07MXX-CDN
SD07MXX-CDG
SD07MXX-CCN
SD07MXX-CCG
SD07MXL-BDN
SD07MXL-BDG
SD07MXL-BCN
SD07MXL-BCG
SD07MXL-CDN
SD07MXL-CDG
SD07MXL-CCN
SD07MXL-CCG
SD07MFX-BDN
SD07MFX-BDG
SD07MFX-BCN
SD07MFX-BCG
SD07MFX-CDN
SD07MFX-CDG
SD07MFX-CCN
SD07MFX-CCG
SD07MDX-BDN
SD07MDX-BDG
SD07MDX-BCN
SD07MDX-BCG
SD07MDX-CDN
SD07MDX-CDG
SD07MDX-CCN
SD07MDX-CCG
SD16MXX-BDN
SD16MXX-BDG
SD16MXX-BCN
SD16MXX-BCG
SD16MXX-CDN
SD16MXX-CDG
SD16MXX-CCN
SD16MXX-CCG
SD16MXL-BDN
SD16MXL-BDG
SD16MXL-BCN
SD16MXL-BCG
SD16MXL-CDN
SD16MXL-CDG
SD16MXL-CCN
SD16MXL-CCG
SD16MFX-BDN
SD16MFX-BDG
SD16MFX-BCN
SD16MFX-BCG
SD16MFX-CDN
SD16MFX-CDG
SD16MFX-CCN
SD16MFX-CCG
SD16MDX-BDN
SD16MDX-BDG
SD16MDX-BCN
SD16MDX-BCG
SD16MDX-CDN
SD16MDX-CDG
SD16MDX-CCN
SD16MDX-CCG
SD32MXX-BDN
SD32MXX-BDG
SD32MXX-BCN
SD32MXX-BCG
SD32MXX-CDN
SD32MXX-CDG
SD32MXX-CCN
SD32MXX-CCG
SD32MXL-BDN
SD32MXL-BDG
SD32MXL-BCN
SD32MXL-BCG
SD32MXL-CDN
SD32MXL-CDG
SD32MXL-CCN
SD32MXL-CCG
SD32MFX-BDN
SD32MFX-BDG
SD32MFX-BCN
SD32MFX-BCG
SD32MFX-CDN
SD32MFX-CDG
SD32MFX-CCN
SD32MFX-CCG
SD32MDX-BDN
SD32MDX-BDG
SD32MDX-BCN
SD32MDX-BCG
SD32MDX-CDN
SD32MDX-CDG
SD32MDX-CCN
SD32MDX-CCG
SD32MXX-HC-BCN
SD32MXX-HC-CCN
SD32MXL-HC-BCN
SD32MXL-HC-CCN
SD32MDX-HC-BCN
SD32MDX-HC-CCN
SD55MXX-BDN
SD55MXX-BDG
SD55MXX-BCN
SD55MXX-BCG
SD55MXX-CDN
SD55MXX-CDG
SD55MXX-CCN
SD55MXX-CCG
SD55MXL-BDN
SD55MXL-BDG
SD55MXL-BCN
SD55MXL-BCG
SD55MXL-CDN
SD55MXL-CDG
SD55MXL-CCN
SD55MXL-CCG
SD55MFX-BDN
SD55MFX-BDG
SD55MFX-BCN
SD55MFX-BCG
SD55MFX-CDN
SD55MFX-CDG
SD55MFX-CCN
SD55MFX-CCG
SD55MDX-BDN
SD55MDX-BDG
SD55MDX-BCN
SD55MDX-BCG
SD55MDX-CDN
SD55MDX-CDG
SD55MDX-CCN
SD55MDX-CCG