Square D 997326 Molded Case Circuit Breaker
- 200A
- 3 Pole
- Bolt-On
Quantity
Square D 997326 - 200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Delivering 200A of power distribution, the 997326 is a 3-pole molded case breaker from Square D's 99 Series. It supports commercial facilities relying on legacy electrical systems. The unit utilizes a bolt-on mounting configuration to install securely into Square D ML panelboards. It serves as a crucial maintenance component for older ML-3 frame setups. Operating at 600VAC with a 10kAIC rating, it provides essential long-time and instantaneous (LI) protection. Load-side lugs are included.Specifications
| Brand | Square D |
|---|---|
| Part Number | 997326-R |
| Series | 99 Series |
| Amperage | 200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D ML Panelboards |
| Wire Gauge | 4 AWG-300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL, CSA |
| Temp Rating | 40°C |
Product FAQs
6 answersWhich panelboards accept the Square D 997326 circuit breaker?
This 99 Series breaker is engineered specifically for bolt-on installation in legacy Square D ML panelboards.
What wire sizes are supported by the lugs on the 997326 breaker?
The included load-side lugs accommodate aluminum or copper conductors ranging from 4 AWG up to 300 kcmil.
What type of protection does the thermal-magnetic trip unit provide?
The fixed thermal and fixed magnetic elements deliver standard long-time and instantaneous (LI) trip functions for reliable overcurrent and short-circuit protection.
What is the maximum fault current this breaker can interrupt at its peak voltage?
At its maximum rated voltage of 600V AC, the breaker provides an interrupting capacity of 10 kAIC.
How does this 200A breaker connect to the panelboard bus?
It features a bolt-on mounting design that fastens directly to the busbars of compatible ML series panels, ensuring a secure mechanical and electrical connection.
Is the 997326 breaker part of an active product line?
This unit belongs to the legacy 99 Frame family. It is typically sourced to maintain, repair, or expand existing Square D ML panelboard systems rather than for new construction.
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