GE Multilin 269PLUS-100P-120VAC 269 Plus Motor Management Relay

The GE Multilin 269PLUS-100P-120VAC, also cataloged as the 269PLUS Motor Management Relay, operates as a dedicated hardware component for thermal overload protection and RTD temperature monitoring within motor control center platforms.

Hardware Specifications

Industrial Control & Backplane Communication Properties

As an integrated protective relay component within industrial motor control architectures, the 269PLUS-100P-120VAC executes physical thermal modeling and signal conditioning:

• Profinet / EtherNet/IP Deterministic Networks: Transmits motor operating parameters, thermal capacity usage, and fault diagnostic packets across industrial communication interface adapters to central supervisory control networks.
• I/O Density Scaling: Integrates four output relay contacts, 100 Ohm Platinum RTD temperature sensor inputs, and CT current sensing logic into a single front-panel module footprint.
• Firmware Flash Compatibility: Onboard memory retains motor trip curves, pickup thresholds, and RTD temperature limits during complete control voltage power interruptions.

Frequently Asked Questions

Q: What control power sources are compatible with the 269PLUS-100P-120VAC relay?

A: The relay accepts a nominal control voltage input of either 120 VAC or 125 VDC across its primary power supply terminals.

Q: What RTD sensor configuration does this specific model variant support?

A: This model variant is factory-configured to interface with 100 Ohm Platinum RTD temperature sensors for stator and bearing monitoring.

Q: How many physical output relay contacts are available on the terminal block?

A: The rear terminal interface provides 4 independent output relay connections for trip, alarm, and control interlock wiring.

Field Installation Guidelines

Proper mechanical cutout mounting and wiring practices maintain electrical isolation in motor control centers:

• Panel Cutout and Mechanical Mounting: Insert the relay housing through the prepared panel cutout from the front of the enclosure. Secure the unit firmly against the panel face using the provided mounting brackets and hardware.
• Control Voltage and CT Wiring Isolation: Route control power leads and current transformer (CT) secondary wiring through separate wire conduits. Ensure CT circuits are securely landed before energizing the main power circuit to prevent high open-circuit voltages.
• Shield Grounding for RTD Inputs: Connect all 100 Ohm Platinum RTD shielded wiring directly to the designated relay shield terminal. Terminate cable shields at a single ground point to prevent ground loops from degrading analog temperature measurements.