The ABB CC-U/STDR 1SVR040010R0000 is a universal resistance monitoring relay from the ABB CR-U series. This specialized electronic relay is designed to monitor the resistance value of an external circuit or sensor by applying a small, safe DC measuring current. It functions as a precision ohmmeter with adjustable setpoints. When the measured resistance exceeds or falls below the user-defined thresholds, the relay activates its output contacts. It is commonly used for continuous monitoring of continuity, insulation resistance (to a limited extent), or the value of resistive sensors, making it ideal for applications like liquid level detection with conductivity probes, moisture detection, ground integrity monitoring, and supervision of heating elements.

The ABB 1SVR040008R1300 is a universal current monitoring relay from the ABB CR-M series (also known as the CM-MSN.x or Miniature Signal series for current). This compact electronic relay is designed to monitor AC current in single-phase or three-phase systems. It detects abnormal current conditions such as overcurrent, undercurrent, and phase loss (in multi-phase configurations) by measuring the current flowing through its integrated current transformer (CT) or an external CT. Upon detecting a fault that exceeds its adjustable thresholds, it activates its output relay to provide alarm signals or initiate protective shutdowns, safeguarding motors, pumps, heating elements, and other electrical loads.

The ABB CC-U/STD 1SVR040000R01700 is a universal monitoring relay (changeover contact) with two setting potentiometers from the ABB CR-U series. This is a highly versatile "Switching Amplifier" relay designed to monitor any DC or AC voltage signal (within its range) and provide a relay output based on user-defined thresholds. It functions as a programmable comparator, converting an analog input signal into a discrete ON/OFF output. The "STD" variant features two independent adjustable setpoints (via potentiometers), making it suitable for applications like level monitoring, pressure control, speed supervision, or general-purpose signal monitoring where a simple but configurable interface between an analog sensor and a digital control circuit is needed.

The ABB CM-TCS.26 (Order Code: 1SVR430740R9000) is a digital timer relay (time delay relay) with on-delay and off-delay functions from the ABB CM-TCS series. This compact and versatile relay provides precise and adjustable timing control for automation and sequencing applications. It is designed to introduce a configurable delay between an input signal (control voltage) and the switching of its output relay. The "TCS" designation indicates a timer with multiple operating modes, making it suitable for a wide range of industrial timing tasks such as delayed start-up, interval control, pulse extension, and automatic shutdown sequences.

The ABB 1SVR550127R1100 is a space-saving single-phase voltage monitoring relay from the ABB CM-SPS.x series (also known as the MS or Miniature Signal series). This ultra-compact relay is designed to monitor AC supply voltage parameters in single-phase systems. It protects sensitive equipment by detecting undervoltage, overvoltage, and phase loss (for single-phase, meaning loss of supply) conditions. Upon detecting an anomaly beyond its set thresholds, it activates or deactivates its output relay to trigger alarms, prevent equipment operation under unsafe conditions, or initiate automatic sequences.

The ABB CC-U/RTDR 1SVR040013R2702 is a universal temperature monitoring relay from ABB's CR-U series, designed for use with Resistance Temperature Detectors (RTDs). This compact electronic relay provides precise and reliable temperature monitoring and protection for a wide range of industrial applications. It continuously measures the resistance of connected RTD sensors (typically Pt100, Pt1000, or Ni100) and compares the value against user-defined setpoints. When the measured temperature exceeds or falls below these thresholds, the relay activates its output contacts to trigger alarms, initiate shutdowns, or control heating/cooling equipment, thereby preventing equipment damage due to overheating or under-temperature conditions.

The ABB 1SVR011700R0000 is a neutral grounding resistor (NGR) monitor relay from the ABB CM-E series. This specialized protection relay is designed to continuously monitor the health and integrity of neutral grounding resistors in electrical power systems, primarily in resistance-grounded low and medium voltage networks. Its core function is to detect failures in the grounding resistor circuit, such as open circuits, short circuits, or degradation in resistance value, and provide early warning or initiate a trip to prevent hazardous overvoltages, equipment damage, or ungrounded system operation.

The ABB 1SVR430103R0200 is a microprocessor-based, 3-phase current monitoring relay from the ABB CM-MSS.x series (also known as the MS or Motor Saving series). This compact device is designed to provide reliable and configurable protection for motors, pumps, fans, and other 3-phase equipment by continuously monitoring the supply current. It safeguards against faults such as overcurrent, undercurrent, phase failure (loss), phase unbalance, and incorrect phase sequence (rotation). Its primary function is to prevent equipment damage and process downtime by disconnecting the load when abnormal current conditions are detected.

The ABB 2TAZ220401R2104 is a selector switch head (operator) with a flush-mounted black knob and an integral, built-in red LED indicator. Designed for 22.5mm panel mounting holes, this module combines the manual control function of a selector (e.g., for choosing between Auto/Manual, Hand/Off/Auto modes) with immediate visual status feedback. The red LED illuminates to signify an active state or a selected position. This is an operator module that requires a separate contact block to form a complete electrical switch.

The ABB GSH201 AC-D16/0.03 is a single-pole, 16A, Type A (AC) Residual Current Circuit Breaker (RCCB) with a 30mA sensitivity. This device, commonly known as a ground fault circuit interrupter (GFCI) or earth leakage protector, is designed to provide life-saving protection against electric shock and fire risk caused by insulation failures and earth leakage currents. It detects the imbalance between the live and neutral currents (residual current) and instantly trips to disconnect the circuit if the leakage exceeds its rated sensitivity of 30mA. The "AC" type indicates it is designed to detect sinusoidal alternating residual currents.