Overview
The Siemens Q315 is a Type QP molded case circuit breaker designed for reliable overcurrent and short-circuit protection in commercial and residential electrical distribution systems. This 3-pole, 15A plug-in breaker operates at 240VAC and provides 10kA interrupting capacity, making it suitable for branch circuit protection in panel boards and load centers.
Key Features
- Type QP plug-in design for easy installation in Siemens load centers
- Thermal-magnetic trip mechanism for fast response to overloads and faults
- Common trip operation ensures simultaneous disconnection across all poles
- UL listed, CSA certified, and HACR rated for heating, air conditioning, and refrigeration applications
- Compact form factor at 1 inch per pole
- Fixed instantaneous trip setting for consistent protection
Technical Specifications
- Model: Q315
- Type: QP Molded Case Circuit Breaker
- Poles: 3
- Current Rating: 15A
- Voltage Rating: 240VAC
- Interrupting Capacity: 10kAIC @ 240V
- Trip Mechanism: Thermal-Magnetic
- Connection Type: Plug-In
- Wire Range: 14–8 AWG (CU/AL)
- Operating Temperature: 40°C
- Dimensions: 3″ L × 3″ W × 3″ D
- Weight: 1 lb
- Standards: UL 489, CSA, HACR
Typical Applications
The Siemens Q315 is commonly used in:
- Commercial building electrical distribution panels
- Residential load centers and meter combo enclosures
- Heating, air conditioning, and refrigeration (HACR) equipment branch circuits
- General 240V 3-phase feeder and branch protection
- Industrial control panel circuits requiring thermal-magnetic protection
Compatibility & Replacements
Compatible With
- Siemens QP load centers (125A frame and smaller)
- Siemens plug-on neutral load centers
- Murray Meter Combo Load Centers (manufactured after January 2002)
- EQ Small Circuit Load Centers
- Murray Rock Solid Load Centers
- Standard 240VAC single-phase and 3-phase panel boards
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The Siemens Q315 is a direct replacement for existing Q315 installations in Siemens QP-frame load centers.
Works With
- UL 489-compliant electrical distribution equipment
- Standard 240VAC 3-phase electrical systems
- NEMA and IEC thermal-magnetic protection schemes
- Manual disconnect and manual control circuits
