Controllers
C1050 + 2x M2000
Nodes
3
Supply
24 VAC, Class 2
Relays
17A @ 277 VAC
Protocol
Modbus RTU (RS485)
Panel
NEMA 1, UL listed
Overview
The Prolon PL-PN3-4X-7X-7X is a pre-wired, UL listed NEMA 1 three controller panel built with a Prolon C1050 Controller and two Prolon M2000 Controllers. Isolation relays rated 17A @ 277 VAC on all digital outputs, overcurrent fuse protection and clearly marked terminal blocks come factory wired.
The C1050 runs the program you specify at order. Each M2000 runs the program you specify at order. The panel contains 3 Modbus RTU (RS485) nodes and runs stand-alone or on a Prolon network of up to 127 nodes.
Specifications per Prolon Pre-Wired Three Controller Panel datasheet PL-DATA-PANEL3CON-EN-V1; Prolon Three and Four Controller Panel pages (proloncontrols.com) retrieved 2026-09-26. Reviewed September 2026.
Best For
- Projects that specify the C1050 programs at order
- Projects that specify the M2000 programs at order
- Equipment rooms where three 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
Three 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 C1050, program specified at order + 2 x Prolon M2000, program specified at order |
| 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 3 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 |
| C1050 Controller Hardware | |
| 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 (each of 2) | |
| 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-PN3-4X-7X-7X?
A pre-wired three controller panel built with a Prolon C1050 Controller and two Prolon M2000 Controllers, 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 C1050 draws 2 VA (consumption), 32 VA (input) and each 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-PN3-4X-7X-7X panel?
24.25 in. W x 24.25 in. H x 6.25 in. D, and it weighs 67 lbs (30.5 kg).
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:
- Three Controller Panel
- Display:
- No Display
- Communication:
- Modbus RTU (RS485)
