Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Siemens Q370H Miniature Circuit Breaker
- 70A
- 3 Pole
- Plug-On
Siemens
Q370H
Miniature Circuit Breaker
Brand
Siemens
SKU
Q370H
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens Q370H - 70A 3 Pole Miniature Circuit Breaker
New
Quantity
Similar Items
50A 3 Pole Miniature Circuit Breaker
45A 3 Pole Miniature Circuit Breaker
100A 3 Pole Miniature Circuit Breaker
Description
Built to handle higher fault currents, this 70-amp QPH series unit delivers an upgraded 22kAIC interrupting capacity for demanding commercial applications. It snaps securely into Siemens EQ, PL, ES, and Ultimate load centers without requiring special hardware. Serving as an ideal upgrade for standard QP breakers or a replacement for legacy Murray MP370H models, it ensures reliable thermal-magnetic protection for critical branch circuits.Specifications
| Brand | Siemens |
|---|---|
| Series | QPH |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, EQ, PL, ES, Ultimate Load Centers |
| Wire Gauge | 8-4 AWG (Cu), 8-2 AWG (Al) |
| Max Wire | 4 AWG (Cu), 2 AWG (Al) |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, HACR Rated, High Interrupting Capacity |
Product FAQs
6 answersWhich load centers are compatible with the Siemens Q370H?
This plug-on breaker is designed for use in Siemens EQ, PL, ES, and Ultimate series load centers. It requires three adjacent spaces on the panel bus bar.
Can the Q370H be used as a replacement for older ITE or Murray breakers?
Yes, Siemens QPH series breakers are backward compatible with many legacy ITE load centers. The Q370H can also serve as a direct replacement for legacy Murray MP370H models in compatible panels.
What is the difference between the Siemens Q370 and the Q370H?
The H in the catalog number designates a high interrupting capacity. The Q370H has a 22kAIC rating at 240VAC, whereas the standard Q370 is rated for 10kAIC. Both share the same physical dimensions and plug-in mounting style.
Is the Siemens Q370H HACR rated?
Yes, this breaker is HACR rated. It is approved for use with heating, air conditioning, and refrigeration equipment that requires this specific overcurrent protection standard.
Does the Q370H require bolt-on connections?
No, the Q370H features a plug-in connection type. It snaps directly onto the bus bar of compatible load centers using spring-loaded clips, without the need for mounting screws or bolts.
What type of trip mechanism does the Q370H use?
It utilizes a fixed thermal-magnetic trip mechanism. The thermal component provides long-time protection against overloads, while the magnetic component offers instantaneous protection against short circuits.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.