SURGE PROTECTION
Surge Arrestor Module (SAM)
Surge protection, testing and monitoring for railway electrical systems
Rowe Hankins SAM² Surge Arrestor Modules provide protection and supporting test functions for railway and industrial electrical systems. The range includes surge protective devices for selected AC and DC circuits, alongside dedicated modules for loop testing, circuit isolation and alarm-loop indication.
With options for signalling, power distribution and other electrical applications, the SAM² range helps protect connected equipment against transient overvoltages while supporting testing and monitoring activities. Available ratings, functions and compatibility depend on the selected module.
KEY FEATURES
Designed for reliable earth fault monitoring
Modular Compatibility
SAM and SAM² base compatibility depends on the specific module and connection-base configuration.
Dedicated Test Modules
Loop-test and isolation-test units support circuit testing, alarm proving and isolation during maintenance.
Remote Alarm Outputs
Selected modules provide normally closed alarm contacts for connection to compatible monitoring systems.
Thermal Monitoring
Thermal sensing is provided on applicable surge protection modules to support status monitoring.
Status Indication
Selected surge protective devices include a front-panel flag to indicate their condition.
AC and DC Surge Protection
Options are available for selected DC signalling circuits, AC power distribution, signal-light circuits and solar applications.
Our product range
AC and DC earth leakage detection units
TECHNOLOGY
How Surge Protection Works
Helping protect circuits from transient overvoltages
Surge protective devices are designed to limit transient overvoltages that can occur during electrical disturbances. The SAM² range includes variants for different AC and DC circuit types, allowing protection to be selected according to the electrical system and application. Selected modules also provide status indication and alarm outputs, helping maintenance teams identify when attention may be required.
Dedicated test and isolation modules extend the range beyond surge protection to support circuit testing and alarm-loop monitoring. The appropriate module should be selected using its individual technical specification.
