The ASCO PULSARTM 451 is a field proven, high performance surge suppressor which provides unsurpassed protection from damaging power surges and transients. Rated from 100 kA to 400kA the PULSARTM 451 is typically installed at the service entrance or any location having medium to high exposure to energy surges and transients. High energy current diversion is handled by multiple, parallel systems of computer matched nonlinear voltage dependent metal oxide varistor arrays. The protection circuitry is packed with specially formulated sand and then epoxy encapsulated. This unique design insures unmatched levels of redundancy and exceptionally long product life. All ASCO PULSARTM 451 models are mounted in standard NEMA 12 enclosures. A door mounted status panel provides LED status indication of normal operation, under voltage, power loss, phase loss or component failure.
Features
  • Computer-matched "smart" MOV array technology for surge protection
  • Unique sand-packed silver fuse network allows rated surge current to pass through without fuse operation
  • Life cycle tested to survive repeated surge currents
  • Available with all modes of protection (L-N,1--G,N-Q, L-L)
  • Sine wave tracking EMI/RFI filtering
  • On-line system monitoring/testing for all suppression components in all modes of protection
  • Form C dry contacts for remote system monitoring
  • Optional features include: rotary disconnect switch, audible alarm, silencing circuitry and surge counter for normal and common detection modes
  • UL rated 300kAIC at 600VAC
  • UL1449, UL1283 and CSA listed
  • ANSI/IEEE C62.11, C62.41, C62.45, Categories A, B and C3 tested
  • Service network with ASCO trained and authorized technicians.
    Call 1 -800-800-ASCO
Documentation
Product
Description
Pub. No.
Pulsar 451
Catalog Sheet (pdf format)
Specification (pdf format)
Specification (MS Word format)
PDF download requires the installation of ADOBE Acrobat Reader.
Ordering Information
To order and ASCO Pulsar 450 Sure Suppressor, complete the following catalog number:
451                    +                   277Y                 +                  200                   +                   - -
Product Voltage Code Surge Code Options
1 Φ Voltage
Code
 3 Φ Voltage
Code
Surge Current
Code
451
110
110N
 208 208D
100,000A
100
AS = Alarm & Surge Counter

D =Rotary disconnect

NEMA Type 3R adn 4 enclosures are available.
120
120N
 240 240D
200,000A
200
230
230N
 480 480D
300,000A
300
480
480L
 600 600D
400,000A
400
120/240
120S
120/240
 240H
-
-
230/240
230S
120/208
 120Y
-
-
230/4001
 230Y
277/480
 277Y
346/600
 346Y
-
1 Valid for 220/380 and 240/415 per IEC
Catalog Number example above is 451277Y200 for a 451, 277/480 VAC 4 wire + gnd, L-N, L-G, N-G, L-L, 200kA/Phase
Protection Code
Code
80k Protection Mode
N
   Single Phase L-G, L-N, N-G
L
   Single Phase L-G, L-L
S
   Split Single Phase L-G, L-N, N-G, L-L
Y
   Three Phase Wye L-G, L-N, N-G, L-L
D
   Three Phase Delta L-L
H
   Three Phase Delta Hi-Leg L-N, N-G, L-L
Dimensions and Weight
Surge
Current		 Protection
Code		 Dimensions (inches) Weight
(lbs.)
Width Height Depth
100kA N 14.0 12.0 8.0 20
L 14.0 12.0 8.0 20
S 14.0 12.0 8.0 20
Y 16.0 14.0 8.0 50
D 16.0 14.0 8.0 50
H 16.0 14.0 8.0 50
200kA N 14.0 12.0 8.0 20
L 14.0 12.0 8.0 20
S 20.0 16.0 9.0 60
Y 20.0 16.0 9.0 60
D 20.0 16.0 9.0 60
H
20.0
16.0
9.0
60
Surge
Current		 Protection
Code		 Dimensions (inches) Weight
(lbs.)
Width Height Depth
300kA N
20.0
 16.0
9.0
 60
L
20.0
 16.0
9.0
 60
S
20.0
20.0
9.0
 70
Y 24.0
20.0
9.0
 90
D 24.0
20.0
9.0
 90
H 24.0
20.0
9.0
 90
400kA N 24.0
20.0
9.0
 90
L 24.0
20.0
9.0
 90
S 24.0
20.0
 9.0 90
Y 30.0 24.0 9.0 110
D 30.0 24.0 9.0 110
H
 30.0 24.0
9.0
110
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Florham Park, NJ 07932