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Prolon PL-PN2-1B-4C : Pre-Wired Two Controller Panel with NC2000 Network Controller (No HMI) and C1050 Boiler Controller, Isolation Relays, NEMA 1 Enclosure, UL Listed

Prolon PL-PN2-1B-4C : Pre-Wired Two Controller Panel with NC2000 Network Controller (No HMI) and C1050 Boiler Controller, Isolation Relays, NEMA 1 Enclosure, UL Listed

Prolon

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SKU:
PL-PN2-1B-4C
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Controller 1

NC2000

Controller 2

C1050 Boiler

Supply

24 VAC, Class 2

Relays

17A @ 277 VAC

Protocol

Modbus RTU / TCP/IP

Panel

NEMA 1, UL listed

Overview

The Prolon PL-PN2-1B-4C is a pre-wired, UL listed NEMA 1 two controller panel built with a Prolon NC2000 Network Controller (No HMI) and a Prolon C1050 Boiler 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. The C1050 Boiler Controller operates staged boilers, as well as the associated pumps and valves. 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-BLR Controller datasheet REV 7.3.0 / PL-DATA-C1050BLR-C/F-EN; Prolon C1050 Boiler Controller Hardware Guide REV 7.3.2; 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
  • Staged boiler plants with lead-lag boilers and pumps
  • 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

NC2000 network controller

The NC2000 connects the Prolon system to the internet over Modbus TCP/IP, with schedules, email alerts and trend logs.

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: Staged boiler sequencing

Operates staged boilers with their pumps and valves, with lead-lag sequences, outside temperature reset and pump exercise intervals.

Free Prolon Focus software

Remote monitoring and configuration with free Prolon Focus software, stand-alone or networked up to 127 nodes.

Authorized Distributor

ZOT Supply is an authorized distributor of Prolon products.

Technical Specifications

Panel
ControllersProlon NC2000 network controller, no HMI + Prolon C1050, Boiler Controller program
Supply24 VAC ±10%, 50/60 Hz, Class 2
Overcurrent ProtectionDisconnect-style Slo-Blo fuse (3A @ 250 VAC), with additional replacement fuse included
EnclosureNEMA 1
Panel Dimensions16.25 in. W x 20.25 in. H x 6.25 in. D (413 mm W x 514 mm H x 159 mm D)
Weight38 lbs (17.25 kg)
Isolation Relays17A @ 277 VAC on all digital outputs (C1050 = 4, M2000 = 5)
Network NodesStand-alone or networked (up to 127 nodes); this panel contains 2 nodes
Environment-4 to 122 °F (-20 to 50 °C), non-condensing
Panel CertificationComplete panel is UL certified
CertificationUL916 Energy Management Equipment, CAN/CSA-C22.2, RoHS, FCC part 15: 2012 class B
NC2000 Network Controller
DisplayNo HMI display
Power5 VA
CommunicationModbus TCP/IP (Static IP address or DHCP) / USB / Ethernet
RS485 PortsModbus RTU (RS485): 1 input port and 1 output port, up to 127 nodes
ConnectionRemovable 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 CardStandard size only, SDSC or SDHC, FAT16 or FAT32
SchedulingInternal clock with up to 16 configurable weekly schedules and annual calendars
Clock BackupSuper-capacitor 0.5F, keeps precise time for 10 days
MicroprocessorASIX AX11015, 8 bits, 25 MHz, 512 KB FLASH memory
C1050 Controller Hardware
Power2 VA (consumption), 32 VA (input)
InputsOutside air: thermistor 10K; Return Water: 10 K thermistor; Supply Water: 10 K thermistor; Proof of pump: dry contact
Digital Outputs4 triac outputs, 10-30 VAC source or sink, 300 mA max (resettable fuse)
Analog Outputs1 output 0-10 VDC / 2-10 VDC / 0-5 VDC, 40 mA max (resettable fuse) for the valve
Indication Lights (LED)State of each output / Communication / Supply / State of microprocessor
CasingMolded ABS, UL94-HB
CommunicationModbus RTU (RS485), up to 127 nodes
Baud Rates9600, 19200, 38400, 57600, 76800, 115200
ConnectionRemovable screw-type terminal blocks (16 AWG max)
Boiler Controller Program
ProgramBoiler Controller
ApplicationOperates staged boilers, as well as the associated pumps and valves
Program InputsOutside air, return water and supply water: 10K thermistor; proof of pump: dry contact
Program Outputs4 triac outputs; analog output: 1 output 0-10 VDC / 2-10 VDC / 0-5 VDC for the valve

Documentation

PDFProlon Pre-Wired Two Controller Panel datasheet (PL-DATA-PANEL2CON-EN-V1)
PDFProlon Pre-Built Control Panels ordering guide (PL-MKT-PANEL-EN-V4)
PDFProlon NC2000 Network Controller datasheet (REV 7.3.0 / PL-DATA-NC2000-C/F-EN)
PDFProlon PL-C1050-BLR Controller datasheet (REV 7.3.0 / PL-DATA-C1050BLR-C/F-EN)
PDFProlon C1050 Boiler Controller Hardware Guide (REV 7.3.2)
PDFProlon Boiler Controller Focus Guide (REV 7.5.0)
PDFProlon Boiler Modbus Configuration Properties (Ver 7.5.0)
PDFProlon C1050 Series Quick Start Guide (REV 2.0 / PL-QCK-C1050-EN)

Frequently Asked Questions

What is the Prolon PL-PN2-1B-4C?

A pre-wired two controller panel built with a Prolon NC2000 Network Controller (No HMI) and a Prolon C1050 Boiler Controller, in a UL listed NEMA 1 enclosure with 17A isolation relays on all digital outputs.

What does the C1050 boiler program control?

It operates staged boilers, as well as the associated pumps and valves. Strategies include outside temperature reset, lead-lag sequences and pump exercise intervals.

What power does the panel require?

24 VAC ±10%, 50/60 Hz, Class 2; the NC2000 without HMI draws 5 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-PN2-1B-4C 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 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:
No Display
Controller Type:
Network Controller
Controller Type:
Boiler
Communication:
Modbus RTU (RS485)
Communication:
Modbus TCP/IP
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