Description
Product Overview
The GE URRHH (also identified as UR-RHH) is a power supply module designed for GE Multilin Universal Relay systems. It provides the operating power required by the relay and also supplies power for associated dry-contact input connections.
UR-RHH belongs to the GE Multilin UR relay power-supply family and is intended for protection, control, and monitoring equipment used in electrical substations, industrial power systems, and generator or motor protection applications.
The commonly referenced part number is 12A0-0101-B4. When purchasing a replacement, the complete module marking should be checked because UR-series power supplies are available in different input-range configurations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | GE Multilin |
| Model | URRHH / UR-RHH |
| Part Number | 12A0-0101-B4 |
| Product Type | Power Supply Module |
| Product Family | Multilin Universal Relay (UR) |
| Low-Range Version | 24–48 V DC nominal |
| High-Range Version | 125–250 V DC nominal |
| High-Range AC Input | 100–240 V AC |
| Power Rating | 35 W / 35 VA depending on input configuration |
| Internal Fuse | 4 A / 250 V |
| Application | Universal Relay protection and control systems |
The available references consistently identify UR-RHH as a UR-series power module, although marketplace descriptions sometimes combine the specifications of different voltage-range variants. For that reason, the exact input rating should be confirmed from the physical nameplate before installation.
Main Functions
The module is responsible for more than simply providing input power.
Its functions include:
- Supplying operating power to the UR relay
- Providing auxiliary power for dry-contact input circuits
- Supporting the internal relay electronics and connected modules
- Providing electrical isolation within the relay power architecture
- Working with the relay’s built-in power-supply monitoring and diagnostic functions
The UR relay can monitor the health of its power supply. Available references describe LED indications associated with normal operation and detected power-supply conditions.
Application
The UR-RHH is typically found in GE Multilin Universal Relay installations used for:
- Generator protection
- Motor protection
- Transformer protection
- Feeder protection
- Substation protection and control
- Industrial power distribution
- Electrical utility automation
It is a component of the relay system rather than a general-purpose PLC power supply.
Installation & Replacement
Before replacing the module, verify the following:
- Confirm the complete model marking: UR-RHH / URRHH.
- Check the input-voltage range on the existing module.
- Verify the associated part number, such as 12A0-0101-B4.
- Compare the connector and mounting arrangement.
- Confirm whether the installation uses a redundant power-supply configuration.
- Inspect the relay chassis and mating connector for contamination or damage.
- Follow the site’s electrical isolation and protection-relay maintenance procedures.
Do not apply the 24–48 VDC specification to a high-range module, or vice versa. The UR-RHH family includes different voltage-range configurations, so the physical label should take priority over a generic marketplace description.
Inspection & Maintenance
For a spare or replacement unit, inspect:
- Housing condition
- Connector pins
- Mounting hardware
- Nameplate and part number
- Signs of overheating
- Fuse condition where accessible
- Corrosion or contamination
- Evidence of previous electrical damage
After installation, verify that the relay powers up normally and that the power-supply status indication is consistent with normal operation.
Compatibility Notes
URRHH is intended for the GE Multilin Universal Relay family. It should not be treated as a generic replacement for other GE relay power modules.
The related UR-RH and UR-SH power modules should also not be assumed to be direct substitutes simply because they belong to the same UR family. The UR-RH and UR-SH versions have different power ratings and electrical characteristics.
For a replacement order, provide a clear photograph of the module label together with the complete part number whenever possible.
Condition
For the eBay listing, use the actual physical condition of the unit being sold. The referenced URRHH model is also commonly listed under part number 12A0-0101-B4.
Do not describe the unit as New Surplus, New, or Refurbished unless that condition has been verified for the actual item.
Ordering Information
Recommended identification:
GE Multilin URRHH / UR-RHH
Part Number: 12A0-0101-B4
When requesting a replacement, it is best to provide:
- Full model number
- Part number
- Nameplate photograph
- Input-voltage marking
- Existing relay model
- Physical connector/photo if available
This avoids confusing the high-range and low-range versions of the UR power-supply family.
Recommended eBay Title
GE URRHH | UR-RHH | 12A0-0101-B4 | Multilin Power Supply Module
