Controllers
NC2000 + 2x C1050 + M2000
Nodes
4
Supply
24 VAC, Class 2
Relays
17A @ 277 VAC
Protocol
Modbus RTU / TCP/IP
Panel
NEMA 1, UL listed
Overview
The Prolon PL-PN4-1B-4X-4X-7X is a pre-wired, UL listed NEMA 1 four controller panel built with a Prolon NC2000 Network Controller (No HMI), two Prolon C1050 Controllers and a Prolon M2000 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. Each C1050 runs the program you specify at order. The M2000 runs the program you specify at order. The panel contains 4 Modbus RTU (RS485) nodes and runs stand-alone or on a Prolon network of up to 127 nodes.
Specifications per Prolon Pre-Wired Four Controller Panel datasheet PL-DATA-PANEL4CON-EN-V1; Prolon Three and Four Controller Panel pages (proloncontrols.com) retrieved 2026-09-26; 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
- Projects that specify the C1050 programs at order
- Projects that specify the M2000 programs at order
- Equipment rooms where four 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
NC2000 network controller
The NC2000 connects the Prolon system to the internet over Modbus TCP/IP, with schedules, email alerts and trend logs.
Four controllers, one enclosure
Controllers need not be related in function and may each serve completely different sequences from separate power sources.
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.
Reflash to another program
Each controller keeps its full functionality, including the ability to reflash into a different controller program. Wiring diagrams are available free at proloncontrols.com.
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, no HMI + 2 x Prolon C1050, program specified at order + Prolon M2000, program specified at order |
| NC2000 Requirement | One of the four controllers must be the NC2000 Network Controller |
| 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 | 24.25 in. W x 24.25 in. H x 6.25 in. D |
| Weight | 67 lbs (30.5 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 4 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 | No HMI display |
| Power | 5 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 (each of 2) | |
| Power | 2 VA (consumption), 32 VA (input) |
| Inputs | 3 analog configurable (thermistor / dry contact / 4-20mA / 0-5 VDC / 1-5 VDC / 0-10 VDC / 2-10 VDC), 1 digital (dry contact only) |
| Digital Outputs | 4 triac outputs, 10-30 VAC source or sink, 300 mA max (resettable fuse); all digital outputs isolated by relays in the panel |
| Analog Outputs | 1 output 0-10 VDC / 2-10 VDC / 0-5 VDC / 1-5 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) |
| M2000 Controller Hardware | |
| Power | 5 VA (consumption), 40 VA (input) |
| Inputs | 9 analog inputs (thermistor / dry contact / 4-20mA / 0-5 VDC / 1-5 VDC), individually configurable for each input |
| Digital Outputs | 5 triac outputs, 24 VAC source, 300 mA max (resettable fuse); all digital outputs isolated by relays in the panel |
| Analog Outputs | 3 outputs 0-10 VDC / 2-10 VDC / 0-5 VDC / 1-5 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) |
Documentation
Frequently Asked Questions
What is the Prolon PL-PN4-1B-4X-4X-7X?
A pre-wired four controller panel built with a Prolon NC2000 Network Controller (No HMI), two Prolon C1050 Controllers and a Prolon M2000 Controller, in a UL listed NEMA 1 enclosure with 17A isolation relays on all digital outputs.
What power does the panel require?
24 VAC ±10%, 50/60 Hz, Class 2; the NC2000 without HMI draws 5 VA, each C1050 draws 2 VA (consumption), 32 VA (input) and the M2000 draws 5 VA (consumption), 40 VA (input).
Can the controllers serve different equipment?
Yes. The controllers need not be related in function and may each serve completely different sequences from separate power sources.
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-PN4-1B-4X-4X-7X panel?
24.25 in. W x 24.25 in. H x 6.25 in. D, and it weighs 67 lbs (30.5 kg).
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.
Does a four controller panel need an NC2000?
Yes. In a four controller panel, one of the four controllers must be the NC2000 Network Controller.
Which programs do the X controllers run?
Each program is specified at order using the application letters in the Prolon panel selection guide, and each controller can later be reflashed into a different program.
- Panel Type:
- Master Controller Panel
- Display:
- No Display
- Controller Type:
- Network Controller
- Communication:
- Modbus RTU (RS485)
- Communication:
- Modbus TCP/IP