Controller 1
NC2000 HMI
Controller 2
C1050 SZ RTU
Supply
24 VAC, Class 2
Relays
17A @ 277 VAC
Protocol
Modbus RTU / TCP/IP
Panel
NEMA 1, UL listed
Overview
The Prolon PL-PN2-1A-4N is a pre-wired, UL listed NEMA 1 two controller panel built with a Prolon NC2000 Network Controller with 10-Inch Touchscreen HMI and a Prolon C1050 Single-Zone Rooftop Controller. Isolation relays rated 17A @ 277 VAC on all digital outputs, overcurrent fuse protection and clearly marked terminal blocks come factory wired.
The NC2000 connects the Prolon network to the internet, manages the occupancy schedule and outside temperature, sends email alerts and records trend logs, with a built-in 10-inch touchscreen for local setup. The C1050 Single-Zone Rooftop Controller operates a single-zone rooftop or other mechanical HVAC system from a Prolon digital temperature sensor. The panel contains 2 Modbus RTU (RS485) nodes and runs stand-alone or on a Prolon network of up to 127 nodes.
Specifications per Prolon Pre-Wired Two Controller Panel datasheet PL-DATA-PANEL2CON-EN-V1; Prolon PL-C1050-RTUS Controller datasheet REV 7.3.0 / PL-DATA-C1050RTUS-C/F-EN; Prolon C1050 Rooftop Controller Hardware Guide (RTU and RTUS) REV 7.3.3; Prolon Two Controller Panel product page (proloncontrols.com) retrieved 2026-09-24; Prolon NC2000 Network Controller datasheet REV 7.3.0 / PL-DATA-NC2000-C/F-EN. Reviewed September 2026.
Best For
- Remote access to the Prolon network over the internet with a local touchscreen
- Single-zone rooftop units
- Mechanical rooms where two controllers share one UL listed enclosure
Warranty
For warranty coverage on this Prolon panel, contact ZOT Supply at sales@zotsupply.com or 855-825-2811.
Key Features
10-inch touchscreen HMI
Built-in 10-inch touchscreen display on the panel door for local setup and monitoring of the Prolon system.
17A isolation relays
Every digital output is isolated by a relay rated 17A @ 277 VAC built into the panel (C1050 = 4, M2000 = 5), and the controller outputs are protected by resettable fuses.
Fused, pre-wired NEMA 1 panel
Clearly marked terminal blocks, wire management channels and a disconnect-style Slo-Blo fuse (3A @ 250 VAC) with a replacement fuse included. The wiring diagram is in the door, and all inputs and outputs are tested in the factory.
C1050: Network schedule
The C1050-RTUS can receive a schedule from a network master, and uses a Prolon digital temperature sensor on its INT port.
Free Prolon Focus software
Remote monitoring and configuration with free Prolon Focus software, stand-alone or networked up to 127 nodes.
ZOT Supply is an authorized distributor of Prolon products.
Technical Specifications
| Panel | |
|---|---|
| Controllers | Prolon NC2000 network controller with 10-inch touchscreen (HMI) + Prolon C1050, Single-Zone Rooftop Controller program |
| Supply | 24 VAC ±10%, 50/60 Hz, Class 2 |
| Overcurrent Protection | Disconnect-style Slo-Blo fuse (3A @ 250 VAC), with additional replacement fuse included |
| Enclosure | NEMA 1 |
| Panel Dimensions | 16.25 in. W x 20.25 in. H x 6.25 in. D (413 mm W x 514 mm H x 159 mm D) |
| Weight | 38 lbs (17.25 kg) |
| Isolation Relays | 17A @ 277 VAC on all digital outputs (C1050 = 4, M2000 = 5) |
| Network Nodes | Stand-alone or networked (up to 127 nodes); this panel contains 2 nodes |
| Environment | -4 to 122 °F (-20 to 50 °C), non-condensing |
| Panel Certification | Complete panel is UL certified |
| Certification | UL916 Energy Management Equipment, CAN/CSA-C22.2, RoHS, FCC part 15: 2012 class B |
| NC2000 Network Controller | |
| Display | Built-in 10-inch touchscreen display (HMI) |
| Power | 30 VA |
| Communication | Modbus TCP/IP (Static IP address or DHCP) / USB / Ethernet |
| RS485 Ports | Modbus RTU (RS485): 1 input port and 1 output port, up to 127 nodes |
| Connection | Removable screw-type terminal blocks (max 16 AWG) for power and RS485, modular RJ45 jacks for Ethernet/RS485, USB female type A for local PC connection |
| SD Card | Standard size only, SDSC or SDHC, FAT16 or FAT32 |
| Scheduling | Internal clock with up to 16 configurable weekly schedules and annual calendars |
| Clock Backup | Super-capacitor 0.5F, keeps precise time for 10 days |
| Microprocessor | ASIX AX11015, 8 bits, 25 MHz, 512 KB FLASH memory |
| C1050 Controller Hardware | |
| Power | 2 VA (consumption), 32 VA (input) |
| Inputs | Outdoor: thermistor 10K; Return: thermistor 10K; Supply: thermistor 10K; External clock or Proof of fan: dry contact |
| Digital Outputs | 4 triac outputs, 10-30 VAC source or sink, 300 mA max (resettable fuse) |
| Analog Outputs | 1 output 0-10 VDC / 2-10 VDC / 0-5 VDC, 40 mA max (resettable fuse) |
| Indication Lights (LED) | State of each output / Communication / Power / State of microprocessor |
| Casing | Molded ABS, UL94-HB |
| Communication | Modbus RTU (RS485) up to 127 nodes |
| Baud Rates | 9600, 19200, 38400, 57600, 76800, 115200 |
| Connection | Removable screw-type terminal blocks (max 16 AWG) |
| Single-Zone Rooftop Controller Program | |
| Program | Single-Zone Rooftop Controller |
| Application | Operates a single-zone rooftop or other mechanical HVAC system from a Prolon digital temperature sensor |
| Program Inputs | Outdoor, return and supply: 10K thermistor; external clock or proof of fan: dry contact; INT port connects a Prolon digital temperature sensor, powered at 24 VAC |
| Program Outputs | 4 triac outputs, all set to SOURCE mode because they share a single source supply (the equipment transformer); analog output: 1 output 0-10 VDC / 2-10 VDC / 0-5 VDC |
Documentation
Frequently Asked Questions
What is the Prolon PL-PN2-1A-4N?
A pre-wired two controller panel built with a Prolon NC2000 Network Controller with 10-Inch Touchscreen HMI and a Prolon C1050 Single-Zone Rooftop Controller, in a UL listed NEMA 1 enclosure with 17A isolation relays on all digital outputs.
What does the C1050 single-zone rooftop program control?
It operates a single-zone rooftop or other mechanical HVAC system from a Prolon digital temperature sensor. Strategies include unoccupied mode settings, morning warm-up and supply air pre-heating and schedule received from a network master.
What power does the panel require?
24 VAC ±10%, 50/60 Hz, Class 2; the NC2000 with HMI draws 30 VA and the C1050 draws 2 VA (consumption), 32 VA (input).
Are the outputs isolated and protected?
Yes. Every digital output is isolated by a relay rated 17A @ 277 VAC built into the panel, and the panel has a disconnect-style Slo-Blo fuse (3A @ 250 VAC) with a replacement fuse included.
What size is the PL-PN2-1A-4N panel?
16.25 in. W x 20.25 in. H x 6.25 in. D (413 mm W x 514 mm H x 159 mm D), and it weighs 38 lbs (17.25 kg).
How are the C1050 digital outputs wired?
On the C1050 rooftop program, all triac outputs are set to SOURCE mode because they share a single source supply, the equipment transformer.
How does the NC2000 connect to a network?
Modbus TCP/IP with a static IP address or DHCP, USB and Ethernet, plus Modbus RTU (RS485) with 1 input port and 1 output port for up to 127 nodes.
- Panel Type:
- Master Controller Panel
- Display:
- Touchscreen Display
- Controller Type:
- Network Controller
- Controller Type:
- Rooftop
- Communication:
- Modbus RTU (RS485)
- Communication:
- Modbus TCP/IP
