Reliance
CONTROLS - Power Inlet BoxesReliance
Controls website
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The new non-metallic PBN Series:
Installs fast
High-impact ABS construction
UV resistant
More than 100 cubic inches of
space
Seven models to 50A
Three ½" & ¾" combo KOs
Bug-proof inlet cover
Unique slide-out base permits
360 access to the flanged inlet
Features exclusive Pop-Fast™
knockouts
Heavy-duty weatherproof flip-lid
standard
UL-listed
See below for more information about the popular PB Series (painted steel power inlet box) and the PBN Series (non-metallic power inlet box)
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Power
Inlet Boxes - Non-Metallic (PBN Series)
Provides a low-cost method for connecting a
portable generator tor a transfer switch, transfer
panel or temporary load center
Designed for heavy-duty outdoor residential and
commercial installations
May be installed indoors or outdoors in an open area where the generator
is being used
Fast installation with exclusive Pop-Fast™ ¾" knockout
design
Can be wired directly to the transfer switch or panel using one
of the three
¾" knockouts (one each on the sides and back)
Ideally suited for standby and spot-power applications
Models available for most portable generator outputs
from 15A/125VAC to 50, 125/150 VAC
Patented design provides over 100 cubic inches
of wiring space
Slide-out base permits easy 360° access to terminals
of the flanged inlet for fast wiring
Water-resistant and bug-proof flanged cover
UL-listed
| PBN Specifications | |
|---|---|
| Enclosure | NEMA 3R, Outdoor |
| Construction | .150" UV stabilized ABS |
| Dimensions | 6-1/4" x 6-1/4" x 4-3/8" |
| Shipping Weight | 2.5 lbs |
| Wiring Space | 103 cubic inches |
| Knockouts | 3 @ 3/4" |
| Power Inlet Boxes - Non-Metallic Series | ||
|---|---|---|
| Item | Conf. | Amps @ Volts |
| PBN15 | 5-15 | 15A @ 125 VAC |
| PBN20 | L14-20 | 20A @ 125/250 VAC |
| PBN21 | L5-20 | 20A @ 125 VAC |
| PBN30 | L14-30 | 30A @ 125/250 VAC |
| PBN31 | L5-30 | 30A @ 125 VAC |
| PBN50 | CS6375 | 50A @ 125/250 VAC |
| PBN51 | CS6377 | 50A @ 125 VAC |
Power
Inlet Boxes - Painted Steel
The raintight NEMA 3R power inlet box is designed for
the use with Pro/Tran transfer switches and Panel/Link
manual transfer panels
May be installed indoors, or outdoors in an open area
where the generator is being used
Four combination 1/2-inch and 3/4-inch knockouts
(one on each side, bottom and back)
Can be wired directly to the transfer switch or panel
Exclusive patented design provides generous wiring space and facilitates
rough-in
PR series includes circuit breakers that match the amperage of the
power inlet![]()
UL-listed
| Power Inlet Boxes | ||||
|---|---|---|---|---|
| Item | Max Generator Running Watts | Max Generator Input | Configuration | Cabinet Type, NEMA |
| PB15 | 1875 | 15A@125VAC | 5-15 | Outdoor, NEMA 3R |
| PB20 | 5000 | 20A@125/250V | L14-20 | |
| PB30 | 7500 | 30A@125/250VAC | L14-30 | |
| PB31 | 3750 | 30A@125VAC | L5-30 | |
| PB50 | 12500 | 50A@125/250VAC | CS6375 | |
| PB51 | 6250 | 50A@125 | CS6360 | |
| Power Inlet Boxes with Built-in Circuit Protection | ||||
| PR20 | 5000 | 20A@125/250VAC | L14-20 | Outdoor, NEMA 3R |
| PR30 | 7500 | 30A@125/250VAC | L14-30 | |
| PR50 | 12500 | 50A@125/250VAC | CS6364 | |
All
Reliance Controls Corporation products are listed by Underwriters
Laboratories Inc.
Reliance has several products. Only selected products are featured here. For information on additional Reliance products please check Reliance's website or request information from ESA.
Additional websites from Reliance Controls:
Reliance Labs -
www.reliancelaboratories.com
The Home Protectors -
www.home-protectors.com
Technical Support -
http://support.reliancecontrols.com
Transfer Switch Safety -
www.transferswitches.com
Ph: 206-574-0092 * Fax: 206-575-0674 * repesa@repesa.com


