Siemens / Murray MD2150V Molded Case Circuit Breaker
- 150A
- 2 Pole
- Plug-On
Quantity
Siemens / Murray MD2150V - 150A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Murray MD2150V is a molded case circuit breaker built to protect a circuit against overloads and short circuits. Rated for 150A and 120/240VAC, it has 2 poles, 1 phase and a 10kA interrupting rating at 120/240VAC. This MD series breaker uses plug-on mounting and lug terminals. Its thermal magnetic trip has fixed thermal and fixed magnetic settings, with long-time and instantaneous trip functions. It provides standard protection.Specifications
| Brand | Siemens / Murray |
|---|---|
| Part Number | MD2150V |
| Series | MD |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Murray Loadcenters |
| Max Wire | 300 kcmil |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
Product FAQs
7 answersHow should I use the Murray MD2150V's 150A current rating when selecting circuit protection?
Use the 150A rating to coordinate breaker selection with conductor ampacity and load requirements. The current rating guides overload protection selection, while the interrupting rating addresses fault-current interruption.
What voltage should I check before selecting this breaker?
The breaker is rated 120/240VAC. Match that rating to the circuit's AC voltage when selecting protection.
When should I choose this breaker's 2-pole configuration?
Choose its 2-pole configuration when the single-phase circuit requires protection on two poles. Pole count and circuit voltage should both be considered during selection.
How does the 10kA interrupting rating affect installation selection?
The interrupting rating is 10kA at 120/240VAC. Select it where the available fault current at the installation point does not exceed that rating.
How does the thermal-magnetic trip protect the circuit?
The thermal element provides long-time protection against sustained overloads, while the magnetic element provides instantaneous response to short-circuit conditions. These functions address different overcurrent conditions.
Can I adjust the thermal or magnetic trip settings?
Both the thermal and magnetic trip settings are fixed. Select the breaker around those fixed characteristics rather than planning to tune its overload or instantaneous response during installation.
What do plug-on mounting and lug terminals mean for installation?
The breaker uses a plug-on mounting connection, and conductors terminate at lugs. Installation involves fully seating the plug-on connection and securely terminating conductors at the lugs.
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