Controller
C1050
Program
Specified at order
Supply
24 VAC, Class 2
Outputs
4 DO / 1 AO
Relays
17A @ 277 VAC
Panel
NEMA 1, UL508A
Overview
The Prolon PL-PN1-4X is a pre-wired, UL508A certified NEMA 1 control panel built with one Prolon C1050 controller, with the controller program specified at order. Isolation relays rated 17A @ 277 VAC on all 4 digital outputs, overcurrent fuse protection and clearly marked terminal blocks come factory wired.
Available C1050 applications are BLR, CHL, FCU, FLX, HP, HPS, RTU, RTUS, HU and WLC. The panel contains 1 Modbus RTU (RS485) node and runs stand-alone or on a Prolon network of up to 127 nodes.
Specifications per Prolon Pre-Wired One Controller Panel datasheet PL-DATA-PANEL1CON-EN-V1; Prolon Pre-Built Control Panels ordering guide PL-MKT-PANEL-EN-V4; Prolon One Controller Panel product page (proloncontrols.com) retrieved 2026-09-22. Reviewed September 2026.
Best For
- Projects that specify the C1050 program at order
- Standardizing one panel build across several C1050 applications
- Contractors who want a UL508A certified panel instead of a field-built enclosure
Warranty
For warranty coverage on this Prolon panel, contact ZOT Supply at sales@zotsupply.com or 855-825-2811.
Key Features
Any C1050 program
Built with a C1050 set up for the application you specify at order: BLR, CHL, FCU, FLX, HP, HPS, RTU, RTUS, HU and WLC.
17A isolation relays
Every digital output is isolated by a relay rated 17A @ 277 VAC built into the panel (C1050 = 4), 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 panel wiring diagram is in the door, and all inputs and outputs are tested in the factory.
Reflash to another program
The C1050 keeps its full functionality, including the ability to reflash into a different controller program. Wiring diagrams are available free at proloncontrols.com.
Onboard diagnostic LEDs
Onboard LEDs show the state of each output, communication, power and the microprocessor for quick diagnostics.
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 | |
|---|---|
| Controller | Prolon C1050, program specified at order (application letter per ordering guide) |
| Supply | 24 VAC ±10%, 50/60 Hz, Class 2 |
| Power | 2 VA (consumption), 32 VA (input) |
| Overcurrent Protection | Disconnect-style Slo-Blo fuse (3A @ 250 VAC), with additional replacement fuse included |
| Enclosure | NEMA 1 |
| Panel Dimensions | 12.25 in. W x 16.25 in. H x 6.25 in. D |
| Weight | 23 lbs (10.5 kg) |
| Isolation Relays | 17A @ 277 VAC on all digital outputs (C1050 = 4, M2000 = 5) |
| Environment | -4 to 122 °F (-20 to 50 °C), non-condensing |
| Panel Certification | Complete panel is UL508A certified |
| Certification | UL916 Energy Management Equipment, CAN/CSA-C22.2, RoHS, FCC part 15: 2012 class B |
| C1050 Controller Hardware | |
| 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; this panel contains 1 node |
| 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-PN1-4X?
A pre-wired one controller panel built with a Prolon C1050 controller in a UL508A certified NEMA 1 enclosure, with isolation relays on all 4 digital outputs.
Which program does the PL-PN1-4X run?
The program is specified at order. C1050 applications are BLR, CHL, FCU, FLX, HP, HPS, RTU, RTUS, HU and WLC; the application-specific codes are PL-PN1-4C through the matching letter in the ordering guide.
Can the controller be changed to another program later?
Yes. The C1050 keeps its full functionality, including the ability to reflash into a different controller program.
What power does the panel require?
24 VAC ±10%, 50/60 Hz, Class 2. 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, the triac outputs are rated 300 mA max with resettable fuses, and the panel has a disconnect-style Slo-Blo fuse (3A @ 250 VAC) with a replacement fuse included.
How does the PL-PN1-4X communicate?
Modbus RTU (RS485), up to 127 nodes, at 9600 to 115200 baud. The panel contains 1 node and is configured with free Prolon Focus software.
What size is the PL-PN1-4X panel?
12.25 in. W x 16.25 in. H x 6.25 in. D, and it weighs 23 lbs (10.5 kg).
- Panel Type:
- Single Controler Panel
- Display:
- No Display
- Communication:
- Modbus RTU (RS485)
