Description
GE Multilin UR6TH | Digital I/O Module | Universal Relay Protection Control
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | GE Multilin / GE Grid Solutions |
| Model | UR6TH / UR-6TH |
| Product family | Universal Relay |
| Module type | Digital I/O module |
| Digital inputs | 8 contact inputs |
| Digital outputs | 4 Form-A outputs |
| Output monitoring | Non-monitored Form-A outputs |
| Output response | Less than 4 ms, as reported by multiple product references |
| Installation | Plug-in module within compatible UR relay chassis |
| Configuration | Host UR relay / EnerVista UR software |
| System interface | Internal UR relay architecture |
| Application | Protection, control, interlocking, breaker and switchgear status |
| Exact input voltage | Verify against host relay configuration and hardware documentation |
| Exact output ratings | Verify against the complete UR hardware configuration |
The UR6TH belongs to the modular GE Multilin Universal Relay platform. Available product references identify the module as providing four Form-A outputs and eight contact inputs, with the outputs intended for discrete control functions.
Product Introduction
The GE Multilin UR6TH is a plug-in digital I/O module for compatible Universal Relay platforms. It expands the relay’s discrete signal capability by accepting contact-status information and providing Form-A output contacts for control logic. Typical signals include breaker status, disconnect position, alarms, permissives, interlocks, and other discrete field conditions.
The UR6TH is part of the relay’s hardware architecture rather than a standalone PLC I/O module. Its actual behavior is determined by the host UR relay, hardware configuration, FlexLogic application, and associated settings. The module should therefore be replaced on a like-for-like basis rather than selected solely by physical dimensions or channel count.
UR6TH
Application Scenarios & Field Pitfalls — Engineer’s Perspective
Engineering Pain Point
The main replacement risk is confusing the UR6TH with another UR-series digital I/O option. GE’s Universal Relay family contains several I/O configurations, and the suffix determines the available input/output arrangement. Current references specifically associate the 6TH configuration with 4 Form-A outputs and 8 contact inputs.
Typical Applications
- Breaker control and status monitoring — receiving auxiliary contact information and issuing discrete control commands.
- Substation interlocking — integrating switchgear permissives and status signals into UR relay logic.
- Generator and feeder protection panels — adding discrete alarm, trip, close, and supervisory signals.
- Industrial power distribution — expanding the I/O capability of an existing Multilin UR protection relay.
Technical Pitfalls to Avoid
- Do not confuse with a generic 16-channel digital I/O card. Several current listings incorrectly describe it as a 16-channel module with 24 VDC inputs/outputs and Modbus/RS-485. Those specifications are not consistent with the documented configuration.
- Verify the complete relay hardware configuration. The is installed inside the modular UR platform, so the host relay model, chassis arrangement, firmware and I/O allocation should be checked before replacement.
- Check the FlexLogic application after replacement. Changing the I/O module can alter the available physical points and their mapping. Do not assume the existing logic is correct simply because the replacement fits.
- Verify output contact requirements. Form-A outputs are not equivalent to monitored outputs or Form-C contacts. Check the connected trip, close, alarm or interposing-relay circuit before energizing the replacement.
Related Products
- GE Multilin UR6CH — digital I/O configuration using Form-C outputs; functionally different from the Form-A arrangement.
- GE Multilin UR6NH — another UR digital I/O configuration with a different output/input arrangement.
- GE Multilin UR6DH — related UR digital I/O configuration for different discrete signal requirements.
- GE Multilin UR6DV — digital input-oriented UR module; useful when output contacts are not required.
- GE Multilin UR8TH — CT/VT-related UR hardware family; not a digital I/O substitute.
- GE Multilin UR8NH — sensitive-ground CT/VT module; performs analog protection signal acquisition rather than discrete I/O.
- GE Multilin UR9EV — UR processor/CPU module; substantially different system role.
- GE Multilin UR7CH — communication module for the UR platform; not a replacement for the .
- GE Multilin UR RHV — UR power-supply hardware; required for a different layer of the relay architecture.
Procurement Note
When purchasing a GE Multilin , match the complete designation, host relay model, installed I/O configuration, hardware revision, and existing FlexLogic mapping.
The most defensible identification is:
GE Multilin = Universal Relay Digital I/O Module with 8 contact inputs and 4 non-monitored Form-A outputs.
Do not approve a substitute based on a generic “digital I/O module” description. The difference between Form-A, Form-C, monitored and non-monitored outputs can directly affect breaker-control and protection-panel wiring.
