Three Phase Monitors
Three-phase monitors from the ATC Diversified Electronics division of Marsh Bellofram offer cost-effective, high-reliability industrial motor and equipment protection. Models are designed to accommodate a variety of voltage ranges and enclosure types, all designed for easy installation, effectively providing early warning of voltage faults, a major contributor to premature equipment failure.
SLA Series Three-Phase Monitoring Relay
The Marsh Bellofram SLA series is a family of three-phase universal phase monitoring relays, designed to provide cost-effective protection against from phase loss, under voltage, and phase reversal conditions that can contribute to premature motor or equipment failure and downtime.
SLB Series Phase Unbalance Monitor
The SLB Series is designed to protect three-phase equipment against Phase Unbalance, Phase Loss, and Phase Reversal conditions.
SLC Series Phase Unbalance and Loss Monitor
The SLC Series is designed to protect 3-phase equipment against Phase Unbalance and Phase Loss conditions.
SLD Series Phase & Under Voltage Monitor
The SLD Series is designed to protect 3-phase equipment against Phase Unbalance, Phase Loss, Under Voltage and Phase Reversal conditions.
SLE Series Phase Monitor
The SLE Series is designed to protect three-phase equipment against Phase Unbalance, Phase Loss, and Under Voltage.
SLH Series Phase Loss, Under Voltage and Phase Sequence Monitor/Relay
The SLH Series is designed to protect equipment against PHASE LOSS (single phasing), UNDER VOLTAGE (brown outs), and PHASE REVERSAL (improper sequence). The SLH is unique in that it has a field-adjustable hysteresis.
SLJ Series Phase Sequence & Under Voltage Monitor
The SLJ Series has a built-in Delay-on-Make Time Delay. The SLJ continuously monitors the three phase lines for adverse conditions such as PHASE LOSS (single phasing), UNDER VOLTAGE (brown outs), and PHASE REVERSAL (improper sequence).
PRT Phase Rotation Tester
The PRT-100 is a hand-held tester that takes the guesswork out of connecting a three-phase motor.
SLU-0200 Series Universal Phase Monitoring Relay
The SLU-0200 Phase Monitor Relays (3-Phase Monitors) provide cost-effective protection against premature equipment failure or downtime caused by voltage faults or untimely outages on 3-Phase systems (Wye or Delta). The SLU-0200 comes complete with “Rapid Cycle Lockout.”
PRA Series Phase Sequence Monitor
For applications where only the phase sequence is critical, consider the PRA Series Phase Sequence Monitor.
SLU-600 Universal Phase Monitoring Relay
The SLU-600 series is a family of universal phase monitoring relays, designed to provide cost-effective protection from premature equipment failure or downtime caused by voltage faults or untimely outages on three-phase systems (Delta and Wye) up to 700 VAC.
SLU-100 Series Universal Phase Monitoring Relay
The SLU-100 series is a family of universal monitor relays, designed to provide cost-effective protection against premature equipment failure or downtime caused by voltage faults or untimely outages on three-phase systems (Delta and Wye).