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General Electric 12SBD11B2A 0.5-2.5A 50/60Hz Differential Relay
- Regular price
- $4,099.00
- Sale price
- $4,099.00
- Regular price
-
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Product Description P/N: 12SBD11B2A
Description
The General Electric 12SBD11B2A is a precision electromechanical differential relay engineered for the selective protection of power transformers, generators, and industrial electrical distribution buses. Operating across a wide frequency range of 50/60 Hz with a dual-range voltage setting of 50–350 V and an adjustable operating current range of 0.5–2.5 Amps, this high-performance relay provides instantaneous internal fault isolation while remaining stable during external through-fault conditions.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | General Electric |
| Category | Panel Accessories |
| Part Number | 12SBD11B2A |
| Subcategory | Relay / Socket / Protective Relay |
| Series | SBD Differential Protective Series |
| Operating Current Range | 0.5 – 2.5 Amps |
| Voltage Setting Range | 50 – 350 V |
| Frequency Rating | 50 / 60 Hz |
| Enclosure Type | Draw-Out Case / Panel Mount |
| Weight | 14.99 lbs |
Information About 12SBD11B2A
The 12SBD11B2A belongs to General Electric's robust SBD protective relay series, renowned for long-term reliability in utility substations and heavy industrial power networks. Weighing 6.80 kgs, its heavy-duty draw-out case construction houses precise induction-disk and magnetic operating units designed for secure panel-flush mounting. The relay features clearly marked terminal connections, calibrated tap plugs for sensitive current pick-up adjustments, and target indicators that visually confirm when a protective trip sequence has been initiated.
Key Features:
-
Sensitive Differential Protection: Engineered to detect internal short circuits and winding faults while ignoring external load fluctuations.
-
Adjustable Current Range: Calibrated operating current settings from 0.5 to 2.5 Amps for flexible system coordination.
-
Wide Voltage Compatibility: Supports control and operating voltages ranging from 50 V to 350 V.
-
Dual 50/60 Hz Frequency Support: Fully compatible with both standard industrial utility frequencies.
-
Rugged 6.80 kgs Enclosure: Heavy industrial draw-out case shields internal mechanisms from dust, vibration, and electromagnetic interference.
-
Visual Trip Indicators: Front-panel target flags provide instant identification of fault actuation events.
-
Precision Mechanical Tap Blocks: Allows technicians to adjust restraint and operating characteristics easily during commissioning.
-
Utility-Grade Reliability: Built to strict General Electric standards for continuous monitoring in critical electrical substations.
The 12SBD11B2A differential relay delivers the precise fault discrimination, thermal endurance, and operational safety required for high-voltage power system protection.
Description
The General Electric 12SBD11B2A is a precision electromechanical differential relay engineered for the selective protection of power transformers, generators, and industrial electrical distribution buses. Operating across a wide frequency range of 50/60 Hz with a dual-range voltage setting of 50–350 V and an adjustable operating current range of 0.5–2.5 Amps, this high-performance relay provides instantaneous internal fault isolation while remaining stable during external through-fault conditions.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | General Electric |
| Category | Panel Accessories |
| Part Number | 12SBD11B2A |
| Subcategory | Relay / Socket / Protective Relay |
| Series | SBD Differential Protective Series |
| Operating Current Range | 0.5 – 2.5 Amps |
| Voltage Setting Range | 50 – 350 V |
| Frequency Rating | 50 / 60 Hz |
| Enclosure Type | Draw-Out Case / Panel Mount |
| Weight | 14.99 lbs |
Information About 12SBD11B2A
The 12SBD11B2A belongs to General Electric's robust SBD protective relay series, renowned for long-term reliability in utility substations and heavy industrial power networks. Weighing 6.80 kgs, its heavy-duty draw-out case construction houses precise induction-disk and magnetic operating units designed for secure panel-flush mounting. The relay features clearly marked terminal connections, calibrated tap plugs for sensitive current pick-up adjustments, and target indicators that visually confirm when a protective trip sequence has been initiated.
Key Features:
-
Sensitive Differential Protection: Engineered to detect internal short circuits and winding faults while ignoring external load fluctuations.
-
Adjustable Current Range: Calibrated operating current settings from 0.5 to 2.5 Amps for flexible system coordination.
-
Wide Voltage Compatibility: Supports control and operating voltages ranging from 50 V to 350 V.
-
Dual 50/60 Hz Frequency Support: Fully compatible with both standard industrial utility frequencies.
-
Rugged 6.80 kgs Enclosure: Heavy industrial draw-out case shields internal mechanisms from dust, vibration, and electromagnetic interference.
-
Visual Trip Indicators: Front-panel target flags provide instant identification of fault actuation events.
-
Precision Mechanical Tap Blocks: Allows technicians to adjust restraint and operating characteristics easily during commissioning.
-
Utility-Grade Reliability: Built to strict General Electric standards for continuous monitoring in critical electrical substations.
The 12SBD11B2A differential relay delivers the precise fault discrimination, thermal endurance, and operational safety required for high-voltage power system protection.
