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SQUARE D Surge Protection Device: Three Phase, 120/240V AC High Leg Delta - Square D QO, HOM, I-Line and NQ Internal Panel-Mount SPDs
SQUARESquare D QO, HOM, I-Line and NQ Internal Panel-Mount SPDs

SQUARE D Surge Protection Device: Three Phase, 120/240V AC High Leg Delta

The SQUARE D Surge Protection Device (MPN HL3IMA24C) is a three-phase, 120/240V AC High Leg Delta internal panel-mount SPD for I-Line panelboards. It features 4 wires plus ground, a 200kA surge current rating, and…

SKU 3G-OTH-127842

Brand
SQUARE
Item
D Surge Protection Device: Three Phase, 120/240V AC High Leg Delta
Category
Square D QO, HOM, I-Line and NQ Internal Panel-Mount SPDs
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SQUARE
Manufacturer Part Number
HL3IMA24C
Type
4 + Ground Wires
Poles
3
AC High Leg Delta
120/240V

Technical Documents

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SQUARE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SQUARE D Surge Protection Device (MPN HL3IMA24C) is a three-phase, 120/240V AC High Leg Delta internal panel-mount SPD for I-Line panelboards. It features 4 wires plus ground, a 200kA surge current rating, and 1000V protection (H-G, N-G) with a 150 V AC continuous voltage rating. This unit includes dry contacts and is designed for use with Square D QO, HOM, I-Line, and NQ panelboards.

Frequently Asked Questions

What is the SQUARE D HL3IMA24C surge protection device used for?

The SQUARE D HL3IMA24C is a three-phase, 120/240V AC High Leg Delta internal panel-mount surge protective device (SPD) designed for Square D I-Line panelboards. It protects sensitive equipment from voltage transients and surges in commercial and industrial electrical distribution systems, using 4 wires plus ground and a 200kA surge current rating.

What are the specifications of the SQUARE D HL3IMA24C?

The SQUARE D HL3IMA24C is a 3-pole SPD rated 120/240V AC High Leg Delta with 4 wires plus ground. It has a 150 V AC continuous voltage rating, 1000V protection (H-G, N-G), and a 200kA surge current capacity. It includes dry contacts and is designed for Square D I-Line panelboards. The manufacturer part number is HL3IMA24C.

Where to buy the SQUARE D HL3IMA24C worldwide?

3G Electric supplies the SQUARE D HL3IMA24C surge protection device worldwide. As a global industrial equipment distributor established in 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this Square D SPD to any international destination.

How to install the SQUARE D HL3IMA24C in a panelboard?

Install the SQUARE D HL3IMA24C in a compatible Square D I-Line panelboard by mounting it on the bus bars. Connect the 4 wires plus ground per the wiring diagram: line, neutral, and ground. Ensure the system voltage matches 120/240V AC High Leg Delta. Use dry contacts for remote monitoring. Follow NEC and local codes; consult a licensed electrician.

Used in

Common applications for SQUARE
Industrial power distribution — Square D HU362AWC non-fusible safety switch for disconnecting three-phase loads up to 60 A.
Busway branch circuits — Square D PQ4203G fusible bus plug for overcurrent protection in I-Line busway systems.
Panelboard surge protection — Square D HL4IMA24C SPD for transient voltage suppression in 277/480V AC wye systems.
Power distribution in control panels — Square D 9080LBA263106 open distribution block for splitting 400 kcmil conductors.
Machine control stations — Square D 9001BG303 push-button station for open/close/stop operations in industrial machinery.
Motor starting and protection — Square D 8536SBG2V02H30S NEMA starter for non-reversing three-phase motor control up to 18 A.

SQUARE Products

3G Electric supplies SQUARE square d qo, hom, i-line and nq internal panel-mount spds. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
SQUARE D Surge Protection Device: Single Phase, 120/240V AC, 1000V (L-L, N-G)/600V (L-N)/700V (L-G) (MPN HEPD80)
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SQUARE D Surge Protection Device: Single Phase, 120/240V AC, 1000V (L-L, N-G)/600V (L-N)/700V (L-G) (MPN HEPD80)
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SQUARE D Surge Protection Device: Single Phase, 120V AC, 2 Poles, 3 Wires, L-N, 150 V(L-N) (MPN HFNF120IESE005)
SQUARE D Surge Protection Device: Single Phase, 120/240V AC, 1200V (L-L)/700V (L-N), 150 V AC, 4X (MPN SDSA1175)
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SQUARE D Surge Protection Device: Single Phase, 120/240V AC, 1200V (L-L)/700V (L-N), 150 V AC, 4X (MPN SDSA1175)

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