The DS3800NPCR1A1A is the baseline revision of General Electric’s Mark V series Fan/Exhaust Control board, designed for standard-voltage AC/DC applications with a relay-primary hybrid output configuration. The suffix “1A1A” indicates Revision A firmware (baseline), standard 12-bit ADC (±2°C / ±0.5°C accuracy), and standard temperature components (0°C to +60°C). This board provides:
8 mechanical relays (5A @ 115VAC / 30VDC) for high-power AC/DC fan control
4 solid-state outputs (3A @ 24–48VDC) for higher-current DC auxiliary control
8 thermocouple input channels for temperature monitoring
8 RTD input channels (Pt100, 3-wire) for high-precision temperature monitoring—adding 16 total temperature channels
2 tachometer input channels for fan speed verification
The DS3800NPCR1A1A is the original, unmodified version of this comprehensive relay-primary hybrid board—ideal for replacing like-for-like in legacy systems requiring high-power relay outputs, solid-state auxiliaries, dual-sensor temperature monitoring, and tachometer feedback.
The DS3800NPCR is a Fan/Exhaust Control board from General Electric’s Mark V Speedtronic™ series, designed for standard-voltage AC/DC applications with a hybrid output configuration. The “NPCR” designation indicates a board with:
8 mechanical relays (5A @ 115VAC / 30VDC) for high-power AC/DC fan control
4 solid-state outputs (3A @ 24–48VDC) for higher-current DC auxiliary control
8 thermocouple input channels for temperature monitoring
8 RTD input channels (Pt100, 3-wire) for high-precision temperature monitoring—adding 16 total temperature channels
2 tachometer input channels for fan speed verification
12-bit ADC (±2°C / ±0.5°C accuracy)
Standard temperature range (0°C to +60°C)
The DS3800NPCR is a relay-primary hybrid board that prioritizes high-current AC/DC relay outputs (5A) while retaining solid-state auxiliaries (3A), dual-sensor temperature monitoring, and tachometer feedback on a single board—making it suitable for applications requiring high-power fan control with redundant temperature sensing.
The DS3800NPCM1B1B is a revision of General Electric’s Mark V series Fan/Exhaust Control board, designed for standard-voltage AC/DC applications with a solid-state-primary hybrid output configuration and dual temperature sensor support. The suffix “1B1B” indicates Revision B firmware with enhanced 16-bit ADC (±1°C / ±0.5°C accuracy), extended temperature components (-20°C to +65°C), 3A solid-state outputs, 5A mechanical relay outputs, 8 thermocouple input channels, 8 RTD input channels (16 total temperature channels), and 2 tachometer input channels.
The DS3800NPCM1B1B is a direct upgrade from the base model, offering improved temperature accuracy (16-bit vs. 12-bit ADC), extended temperature range (-20°C to +65°C), and Revision B firmware enhancements.
The DS3800NPCM is a Fan/Exhaust Control board from General Electric’s Mark V Speedtronic™ series, designed for standard-voltage AC/DC applications with a solid-state-primary hybrid output configuration. The “NPCM” designation indicates a board with:
8 solid-state outputs (3A @ 24–48VDC) for higher-current DC fan control
4 mechanical relays (5A @ 115VAC / 30VDC) for high-power AC/DC auxiliary control
8 thermocouple input channels for temperature monitoring
8 RTD input channels (Pt100, 3-wire) for high-precision temperature monitoring—adding 16 total temperature channels
2 tachometer input channels for fan speed verification
12-bit ADC (±2°C / ±0.5°C accuracy)
Standard temperature range (0°C to +60°C)
The DS3800NPCM is the most comprehensive hybrid board in the Mark V lineup, combining dual-sensor temperature monitoring (T/C + RTD), 3A solid-state outputs, 5A relay auxiliaries, and tachometer feedback on a single board—making it suitable for applications requiring redundant temperature sensing.
The DS3800NPCG is a Fan/Exhaust Control board from General Electric’s Mark V Speedtronic™ series, designed for standard-voltage AC/DC applications with a solid-state-primary hybrid output configuration. The “NPCG” designation indicates a board with:
8 solid-state outputs (3A @ 24–48VDC) for higher-current DC fan control
4 mechanical relays (5A @ 115VAC / 30VDC) for high-power AC/DC auxiliary control
8 thermocouple input channels for temperature monitoring
No tachometer feedback capability
12-bit ADC (±2°C accuracy)
Standard temperature range (0°C to +60°C)
The DS3800NPCG is identical to the “NPCF” series but without tachometer feedback, making it a cost-effective solution for applications where fan speed verification is not required.
The DS3800NPCF1A1A is the baseline revision of General Electric’s Mark V series Fan/Exhaust Control board, designed for standard-voltage AC/DC applications with a solid-state-primary hybrid output configuration. The suffix “1A1A” indicates Revision A firmware (baseline), standard 12-bit ADC (±2°C accuracy), and standard temperature components (0°C to +60°C). This board provides:
8 solid-state outputs (3A @ 24–48VDC) for higher-current DC fan control
4 mechanical relays (5A @ 115VAC / 30VDC) for high-power AC/DC auxiliary control
8 thermocouple input channels for temperature monitoring
2 tachometer input channels for fan speed verification
The DS3800NPCF1A1A is the original, unmodified version of this comprehensive hybrid board—ideal for replacing like-for-like in legacy systems that require 3A solid-state outputs, 5A relay auxiliaries, full 8-channel temperature monitoring, and tachometer feedback.
The DS3800NPCF is a Fan/Exhaust Control board from General Electric’s Mark V Speedtronic™ series, designed for standard-voltage AC/DC applications with a solid-state-primary hybrid output configuration. The “NPCF” designation indicates a board with:
8 solid-state outputs (3A @ 24–48VDC) for higher-current DC fan control
4 mechanical relays (5A @ 115VAC / 30VDC) for high-power AC/DC auxiliary control
8 thermocouple input channels for temperature monitoring
2 tachometer input channels for fan speed verification
12-bit ADC (±2°C accuracy)
Standard temperature range (0°C to +60°C)
The DS3800NPCF is a comprehensive hybrid board that upgrades the thermocouple inputs to 8 channels (vs. 4 on the NPCE), making it suitable for applications requiring full temperature monitoring while maintaining 3A solid-state outputs, 5A relay auxiliaries, and tachometer feedback.
The DS3800NPCD is a Fan/Exhaust Control board from General Electric’s Mark V Speedtronic™ series, designed for standard-voltage AC/DC applications with a solid-state-primary hybrid output configuration. The “NPCD” designation indicates a board with:
8 solid-state outputs (3A @ 24–48VDC) for higher-current DC fan control
4 mechanical relays (5A @ 115VAC / 30VDC) for high-power AC/DC auxiliary control
4 thermocouple input channels for temperature monitoring
2 tachometer input channels for fan speed verification
12-bit ADC (±2°C accuracy)
Standard temperature range (0°C to +60°C)
The DS3800NPCD is an enhanced fan-dense hybrid board that upgrades the solid-state outputs to 3A (vs. 2A on the NPAC), making it suitable for larger DC fans while maintaining 5A relay auxiliaries and tachometer feedback.
The DS3800NPAC is a Fan/Exhaust Control board from General Electric’s Mark V Speedtronic™ series, designed for standard-voltage AC/DC applications with a solid-state-primary hybrid output configuration. The “NPAC” designation indicates a board with:
8 solid-state outputs (2A @ 24–48VDC) for DC fan control
4 mechanical relays (5A @ 115VAC / 30VDC) for high-power AC/DC auxiliary control
4 thermocouple input channels for temperature monitoring
2 tachometer input channels for fan speed verification
12-bit ADC (±2°C accuracy)
Standard temperature range (0°C to +60°C)
The DS3800NPAC is a fan-dense hybrid board that combines solid-state DC outputs, high-current relay auxiliaries (5A), and tachometer feedback on a single board, optimized for single-zone cooling applications requiring speed verification and high-power auxiliary devices.
The DS3800NOTA1A1A is the baseline revision of General Electric’s Mark V series Fan/Exhaust Control board, designed for standard-voltage DC applications with a solid-state-primary hybrid output configuration. The suffix “1A1A” indicates Revision A firmware (baseline), standard 12-bit ADC (±2°C accuracy), and standard temperature components (0°C to +60°C). This board provides:
8 solid-state outputs (2A @ 24–48VDC) for DC fan control
4 mechanical relays (3A @ 115VAC / 30VDC) for AC/DC auxiliary control
8 thermocouple input channels for temperature monitoring
No tachometer feedback capability
The DS3800NOTA1A1A is the original, unmodified version of this hybrid board—ideal for replacing like-for-like in legacy systems that require both solid-state DC outputs and relay auxiliaries with full temperature monitoring.
The DS3800NOTA is a Fan/Exhaust Control board from General Electric’s Mark V Speedtronic™ series, designed for standard-voltage DC applications with a solid-state-primary hybrid output configuration. The “NOTA” designation indicates a board with:
8 solid-state outputs (2A @ 24–48VDC) for DC fan control
4 mechanical relays (3A @ 115VAC / 30VDC) for AC/DC auxiliary control
8 thermocouple input channels for temperature monitoring
No tachometer feedback capability
12-bit ADC (±2°C accuracy)
Standard temperature range (0°C to +60°C)
The DS3800NOTA is a comprehensive hybrid board that combines solid-state DC outputs and mechanical relay auxiliaries with full 8-channel temperature monitoring on a single board.
The DS3800NOCB1B1B is a specialized revision of General Electric’s Mark V series Fan/Exhaust Control board, designed for standard-voltage DC applications with a solid-state-primary hybrid output configuration. The suffix “1B1B” indicates Revision B firmware with enhanced 16-bit ADC (±1°C accuracy), extended temperature components (-20°C to +65°C), 2A solid-state outputs, 5A mechanical relay outputs, and 4 thermocouple input channels—with no tachometer feedback.
The DS3800NOCB1B1B is distinguished from the “NOCA” series by its higher relay current capacity (5A vs. 3A), making it suitable for applications requiring more powerful AC/DC auxiliary loads.
