Surge Protective Devices
Installation & Operation Manual
Model 445
Model 440
NEMA 4X (Non-Metallic)
“A” Monitoring Option
NEMA 4X (Non-Metallic)
“C” Monitoring Option
NEMA 12
(Steel)
“A” Monitoring
Option
Installation, Operation and Maintenance Manual IO-70106 RevK 08-182
TROUBLESHOOTING/SERVICING/MAINTENANCE
Troubleshooting 6
ASCO SURGE PROTECTIVE DEVICE
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
TABLE OF CONTENTS
INSTALLATION
Environment
Mounting
Wire Sizing/Routing
Conduit Connection
Wiring Connections
Applying Power
3
3
3
3
3
3
PRODUCT RATINGS AND LIMITATIONS
Voltage Protection Ratings
Circuit Ampacity Limitations
6
6
MODEL NUMBER CONFIGURATION
Model Number Configuration 4-5
SPD WIRING AND MOUNTING
Circuit Breaker and Wire Size
Parallel Wiring Diagram
Screw Mounting
DIN Rail Mounting Kit
Dimensional Information
6
6
6
6
7
The ASCO Model 445 & 440 Surge Protective Devices are high quality, high energy surge current
diversion system designed to protect sensitive equipment from damaging transient voltage surges
resulting from load switching, lightning strikes and other sources.
The installer should perform the following steps to assure a quality installation. Please read all
instructions before starting the installation of this product. These instructions do not replace national or
local electrical codes — check applicable codes to ensure compliance
INSTALLATION
DANGER! ONLY QUALIFIED PERSONNEL SHOULD INSTALL OR
SERVICE THIS SYSTEM. ELECTRICAL SAFETY PRE-CAUTIONS MUST
BE FOLLOWED WHEN INSTALLING OR SERVICING THIS EQUIPMENT. TO PREVENT RISK OF
ELECTRICAL SHOCK, TURN OFF AND LOCK OUT ALL POWER SOURCES TO THE UNIT BEFORE
MAKING ELECTRICAL CONNECTIONS OR SERVICING.
DANGER! SEULEMENT LE PERSONNEL QUALIFIÉ DOIT INSTALLER OU MAINTENIR CE SYSTÈME. DES
PRÉCAUTIONS DE SÉCURITÉ EN ÉLECTRICITÉ DOIVENT ÊTRE SUIVIS LORS DE L’INSTALLATION OU
DE LA MAINTENANCE DE CET EQUIPEMENT. POUR EVITER TOUT RISQUE DE CHOC ÉLECTRIQUE,
DÉBRANCHEZ ET VEROUILLER TOUTES LES SOURCES D’ ALIMENTATION DE CET EQUIPEMENT
AVANT DE LE BRANCHER OU LE MAINTENIR.
Units that include the ACTIVE SURGE MONITOR option
See MODEL NUMBER CONFIGURATION on page 4-5 to verify the
SPDs monitoring option
Refer to quick start guide QS-70100 or manual IO-70109
for additional installation and operation instructions.
Installation, Operation and Maintenance Manual IO-70106 RevK 08-183
Environment: The unit is designed for operation indoors in ambient temperatures of -35ºC (-31ºF)
to +85ºC (+185ºF) with a relative humidity of 0% to 95% (non-condensing). The unit is provided in
an industrial enclosure, which should not be installed in areas with excessive dust, corrosive vapors,
flammable materials or explosive atmospheres.
Mounting: Mount unit as close as possible to the service panel in close proximity to the breaker that
will feed the SPD. For best performance, unit should be positioned so that the length of the wiring to the
surge protective device (SPD) unit is minimized. Dimensional information is shown on page 7.
NEMA 4X (Non-Metallic) enclosure - Remove the cover from the unit to gain access to the
mounting holes inside the case. Use #6 x 3/4” self-threading screws (provided), to mount the SPD
to the wall or back plane. Replace the cover on the unit and torque cover screws to 10 IN-LBS,
(see drawing).
NEMA 12, (Metallic) enclosure – Mounting flanges accept 1/4 hardware.
Wire Sizing/Routing: To reduce the wiring impedance to surge currents, the phase, neutral (if required),
and ground conductors are recommended to be 12AWG-10AWG and twisted together and routed in
the same raceway (conduit). Avoid any sharp bends in the conductors. All wiring must comply with the
National Electrical Code (NEC) and applicable local codes.
Conduit Connection: The SPD wires should feed through the plastic conduit piece supplied. The conduit
should be cut to match the distance from the unit to electrical panel. Use the supplied conduit hub to
connect to the electrical panel.
Wiring Connections: Before making connections to the unit, verify that the unit model number and
nameplate voltage rating are appropriate for connection to the intended power source (See table).
1. It is recommended that a 20A (with 12 AWG wire) or 30A (with 10 AWG wire) circuit breaker be used
for installation and connection to the service panel.
2. Connect a white wire from the supply neutral to the neutral terminal/lug inside the SPD, and connect
a green wire from the source ground to the SPD ground terminal/lug.
3. Connect a black phase wire from each line on the service panel/circuit breaker to each corresponding
phase terminal/lug in the SPD.
4. If using remote sensing (Form C dry contact), connect wires to COM (orange), NC (blue), and NO
(yellow) respectively. Relay’s maximum switching capacity is 250VAC, 5A.
CAUTION - FOR PROPER AND SAFE OPERATION, NEUTRAL AND
GROUND MUST BE RELIABLY CONNECTED. FAILURE TO OPERATE
THIS UNIT FROM A SOLIDLY GROUNDED POWER SOURCE OF THE PROPER CONFIGURATION WILL
REDUCE OR IMPEDE OPERATION, AND MAY RESULT IN UNIT FAILURE.
ATTENTION - Pour un fonctionnement correct et sûr, le neutre et la mise à la terre doit être connectés
de manière fiable. Défaut de faire fonctionner cet appareil à partir d’une source d’alimentation
solidement mise à la terre va réduire ou même empêcher le fonctionnement correct et peut entraîner
une défaillance de l’unité.
Applying Power: Apply power to the SPD and assure status indications are normal. Under normal
conditions, the green “OK” or “PHASE” LED(s) are illuminated and the red “REPLACE” or “SERVICE” LED
is OFF. If normal status indication does not exist, see “TROUBLESHOOTING”.
Installation, Operation and Maintenance Manual IO-70106 RevK 08-184
Model 440 Number Configurator & Options
Model 445 Number Configurator & Options
Voltage Codes
P
Per Phase
kA Rating
System
A
Modes of
Protection
(Default)
kA Rating
Per Phase
440
Model 440
Product Line
Common Systems
120S = 240/120V Split Phase - 1Ø, 3W+Grnd, (Fig 1)
120Y = 208Y/120V Wye - 3Ø 4W+Grnd, (Fig 2)
240H = 240/120V High Leg Delta (B High), (Fig 3)
277Y = 480Y/277V Wye - 3Ø 4W+Grnd, (Fig 2)
347Y = 600Y/347V Wye - 3Ø 4W+Grnd, (Fig2)
480D = 480V Delta - 3Ø 3W+Grnd, (Fig4) & HRG Wye
Other Available Systems - Confirmation Encouraged
120N = 120V Single Phase (Fig 5)
127N = 127V Single Phase (Fig 5)
127S = 254/127V Split Phase - 1Ø 3W+Grnd, (Fig 1)
127Y = 220Y/127V Wye - 3Ø 4W+Grnd (Fig 2)
220Y = 380Y/220V Wye - 3Ø 4W+Grnd (Fig 2)
230Y = 400Y/230V Wye - 3Ø 4W+Grnd (Fig 2)
240N = 240V Single Phase (Fig 5) - Not split phase
240S = 480/240V Split Phase, or Two legs of Wye, (Call)
240Y = 415Y/240V Wye - 3Ø 4W+Grnd (Fig 2)
240C = 240V B Corner Grnd Delta, 3Ø 3W+Grnd (Fig 6)
240D = 240V Delta - 3Ø 3W+Grnd (Fig 4)
254Y = 440Y/250V Wye - 3Ø 4W+Grnd (Fig 2)
277N = 277V Single Phase (Fig 5)
277S = 480/240V Split Phase, or Two legs of Wye, (Call)
300N = 300V Single Phase (Fig 5)
300Y = 520Y/300V Wye - 3Ø 4W+Grnd (Fig 2)
480N = 480V Single Phase (1 Hot, 1 Neu, 1 Grnd) (Fig 5)
480C = 480V B Corner Grnd Delta, 3Ø 3W+Grnd (Fig 6)
600C = 600V B Corner Grnd Delta, 3Ø 3W+Grnd (Fig 6)
600D = 600V Delta - 3Ø 3W+Grnd (Fig 4) & HRG Wye
10 = 100kA
20 = 200kA
30 = 300kA
Voltage Codes
P
Per Phase
kA Rating
System
A
Modes of
Protection
(Default)
kA Rating
Per Phase
445
Model 445
Product Line
Common Systems
120S = 240/120V Split Phase - 1Ø, 3W+Grnd, (Fig 1)
120Y = 208Y/120V Wye - 3Ø 4W+Grnd, (Fig 2)
277Y = 480Y/277V Wye - 3Ø 4W+Grnd, (Fig 2)
347Y = 600Y/347V Wye - 3Ø 4W+Grnd, (Fig2)
Other Available Systems - Confirmation Encouraged
127Y = 220Y/127V Wye - 3Ø 4W+Grnd (Fig 2)
220Y = 380Y/220V Wye - 3Ø 4W+Grnd (Fig 2)
230Y = 400Y/230V Wye - 3Ø 4W+Grnd (Fig 2)
240Y = 415Y/240V Wye - 3Ø 4W+Grnd (Fig 2)
254Y = 440Y/250V Wye - 3Ø 4W+Grnd (Fig 2)
15 = 150kA
30 = 300kA
Figure 1
SPLIT
2 Phases, 1 Neutral,
1 Ground
Phase B (Black)
Phase A (Black)
Neutral (White)
V
V
}
}
Ground (Green)
Figure 2
WYE
3 Phases, 1 Neutral,
1 Ground
}
Phase A (Black)
Phase B (Black)
Neutral (White)
Phase C (Black)
Ground (Green)
A
C
N
V
B
Installation, Operation and Maintenance Manual IO-70106 RevK 08-185
Model 440 Number Configurator & Options
Model 445 Number Configurator & Options
Monitoring
Options
Enclosure
UL 1449
Type1/Type 2
Accessory/
Option(s)
J = NEMA 4X Non-Metallic
Polycarbonate (Standard)
L = NEMA 12 Steel (‘A’ Monitoring only)
Size - 10” x 8” x 4”
(251mm x 203mm x 102mm)
C = Compression
Lugs
W = Wire Leads
A = LEDs/Audible Alarm/Relay
C = ‘A’ above plus N-G LED and
Surge Counter
T =
Active Surge Monitor with
Internal Ethernet Port
X =
Active Surge Monitor with
External Ethernet Port
1 = UL 1449 Type 1
2 = UL 1449 Type 2,
(Includes UL1283 Filter)
0 = No Trailing
Accessory/Option
X = Yes Trailing
Accessory/Option
0 = No Trailing
Accessory/Option
X = Yes Trailing
Accessory/Option
To configure a 440 unit with the Active Surge Monitor
“ASM” monitoring option, refer to document DS-70116
Connection
Type
C
Connection
Type
Monitoring
Options
Enclosure
UL 1449
Type1/Type 2
Accessory/
Option(s)
J = NEMA 4X Non-Metallic
Polycarbonate (Standard)
L = NEMA 12 Steel (‘A’ Monitoring only)
Size - 10” x 8” x 4”
(251mm x 203mm x 102mm)
A = LEDs/Audible Alarm/Relay
C = ‘A’ above plus N-G LED and
Surge Counter
T =
Active Surge Monitor with
Internal Ethernet Port
X =
Active Surge Monitor with
External Ethernet Port
1 = UL 1449 Type 1
2 = UL 1449 Type 2,
(Includes UL1283 Filter)
C = Compression Lugs
W = Wire Leads
To configure a 445 unit with the Active Surge Monitor
“ASM” monitoring option, refer to document DS-70116
Figure 1
SPLIT
2 Phases, 1 Neutral,
1 Ground
Phase B (Black)
Phase A (Black)
Neutral (White)
V
V
}
}
Ground (Green)
Figure 2
WYE
3 Phases, 1 Neutral,
1 Ground
}
Phase A (Black)
Phase B (Black)
Neutral (White)
Phase C (Black)
Ground (Green)
A
C
N
V
B
Figure 3
HIGH LEG DELTA
(B High) 3 Phases,
(B High), 1 Neutral,
1 Ground
Phase A (Black)
Phase B (Orange)
Neutral (White)
Phase C (Black)
Ground (Green)
}
V
Figure 5
SINGLE POLE
1 Phase, 1 Neutral,
1 Ground
V
}
Neutral (White)
Phase A (Black)
Ground (Green)
Figure 4
DELTA & HRG WYE
3 Phases, 1 Ground
Phase A (Black)
Phase C (Black)
Phase B (Black)
Ground (Green)
}
V
Figure 6
CORNER GROUND
DELTA (B grounded)
2 Phases, 1 Ground
Phase A (Black)
Phase C (Black)
Ground (Green)
V
}
Installation, Operation and Maintenance Manual IO-70106 RevK 08-186
PRODUCT RATINGS AND LIMITATIONS
Voltage Protection Rating: To obtain the voltage protection ratings (VPRs), as obtained by Underwriters
Laboratories, Incorporated, in accordance with the Standard for Safety, Surge Protective Devices (SPDs),
Standard 1449 Fourth Edition, marked on this product, #12 AWG wire must be utilized to connect the
445/440/430 SPD to your facilities’ power grid. Connections made with conductors other than #12 AWG
may result in dierent VPRs.
Circuit Ampacity Limitations: This device has been investigated by Underwriters Laboratories,
Incorporated to withstand, without exposing live circuits or components on power sources, a voltage of
two times (2x) the device ratings, and fault currents of up to 200,000 AIC, as described in the Standard
for Safety, Surge Protective Devices (SPDs), Standard 1449, Fourth Edition.
TROUBLESHOOTING
If any of the diagnostic indicators indicates a problem (i.e. red LED ON, and/or green LED(s) OUT; and/or
alarm sounding), check all connections and voltages to the unit. If all connections are reliable, and proper
voltages are supplied to the unit, call ASCO Surge Protection, Inc at 800-237-4567.
N-G Overvoltage Indication: If all green “PHASE” LEDs are ON and red “SERVICE” LED is also ON this
indicates that the neutral to ground voltage at the connected panel may be 20 VAC or higher.
SPD WIRING & MOUNTING
CIRCUIT BREAKER & WIRE SIZE SUMMARY ALARM CONTACTS
Circuit breaker sizing for SPD installation is determined by
the wire size being used for connection. Larger gauge wire
will provide increased performance over a smaller gauge
wire. Connection wire to a SPD should also be as short and
straight as possible.
Recommended connection wire & circuit breaker
combinations
12 AWG wire with 20A circuit breaker
10 AWG wire with 30A circuit breaker
Terminal/Lug connections are
provided for Summary Alarm Contact
monitoring.
250VAC, 5A Max
“NO” = Normally Open
“NC” = Normally Closed
“COM” = Common
Designations are with AC Applied
PARALLEL WIRING DIAGRAM SCREW MOUNTING
Remove cover, and use #6 x 3/4”
self-threading screws (provided) for
mounting, Replace cover, torque screws
to 10 in/lbs.
Installation, Operation and Maintenance Manual IO-70106 RevK 08-187
Recommended
Conduit Entry
Locations
DIMENSIONAL INFORMATION
for Non-Metallic NEMA 4X Enclosure Option (“J”)
Unit A B C D E Weight
Model 445/440 9.6” [244] 4.9” [124] 3.2” [81] 9” [229] 3.5” [90] 4.4 lbs [2.0kg]
DIMENSIONAL INFORMATION
for Steel Enclosure Option (NEMA 12 = “L”)
Unit A B C D E Weight
Model 445/440 10” [254] 8” [203] 4.3” [109] 10.75” [273] 6” [152] 10.9 lbs [4.9kg]
CONDUIT ENTRY FOR NEMA TYPE 12 UNITS
1/2 NPT flexible conduit (12”) and
connector assembly included.
A
D
B E
C
4.0
[102]
2.0
[52]
SPD does not have conduit entry pre-drilled.
MOUNTING:
(x4) .31” [8mm]
Diameter
¼” Hardware
Recommended
E
B
AD
C
3.0
[76]
2.1
[53]
SPDs DO NOT have the conduit entry
location pre-determined. This allows for
a more flexible installation. See drawing
for recommended conduit entry points.
IO-70106 RevK 08-18
14550 58th Street North
Clearwater, Florida 33760
P (800) 237-4567
P (727) 535-6339
F (727) 539-8955
E customercare@ascopower.com
While every precaution has been taken to ensure accuracy and completeness
in this literature, ASCO assumes no responsibility, and disclaims all liability for
damages resulting from use of this information or for any errors or omissions.
CALIFORNIA CUSTOMERS - PROP 65 WARNING
WARNING: This product can expose you to chemicals including DINP, which
is known to the State of California to cause cancer, and DIDP, which is known to
the State of California to cause birth defects or other reproductive harm. For more
information go to www.P65Warnings.ca.gov.
ADVERTENCIA: Este producto puede exponerle a químicos incluyendo
DINP, que es conocido por el Estado de California como causantes de cáncer y
DIDP, que es conocido por el Estado de California como causante de defectos
de nacimiento u otros daños reproductivos. Para mayor información, visite
www.P65Warnings.ca.gov.
AVERTISSEMENT: Ce produit peut vous exposer à des agents chimiques, y
compris DINP, identiés par l’État de Californie comme pouvant causer le cancer,
et DIDP, reconnu par l’État de Californie comme pouvant causer des malformations
congénitales ou autres troubles de l’appareil reproducteur. Pour de plus amples
informations, prière de consulter www.P65Warnings.ca.gov.
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