Hager MSN150 Miniature Circuit Breaker MCB 50A 1 Pole C Curve 6kA 1 Module DIN Rail 240-415V

SKU: hagmcb1506k

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(ex-GST)

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Hager MSN150 50A single-pole miniature circuit breaker (MCB) with C tripping curve and 6kA breaking capacity. Compact 1-module DIN rail design protects circuits against overload and short circuit. AS/NZS 60898 compliant.

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50A sub-main protection in one module.

The Hager MSN150 is a 50A single-pole miniature circuit breaker (MCB) with a C tripping curve and 6kA breaking capacity, protecting residential and light commercial circuits against overload and short circuit from a compact 1-module DIN rail body.

Key Features

Rated current: 50A, single pole (1P)
C tripping curve (5–10x In)
6kA breaking capacity (Icn) to IEC 60898-1
Rated voltage 240–415V AC, insulation voltage 500V
Compact 1-module width (17.5mm) DIN rail mount
Accepts conductors 1–35mm² rigid, 1–25mm² flexible
Energy limiting class 3; IP20; 360° mounting
Compliant with AS/NZS 60898.1

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Why it Matters

For the heaviest household feeds.
The MSN150 is a 50A miniature circuit breaker, protecting a circuit against both overload and short circuit and tripping automatically when either occurs. A 50A rating suits sub-mains and heavy feeds – sub-boards, large appliances and high-demand distribution circuits – and its 6kA breaking capacity suits the fault levels found in residential and light commercial switchboards, all in a single DIN module.

C curve for motor and inductive loads.
The C tripping characteristic trips on short circuit at 5 to 10 times rated current, the general-purpose curve suited to mixed resistive and inductive loads such as motor and general-purpose circuits. Backed by a 6kA short-circuit breaking capacity to IEC 60898-1 and energy limiting class 3, the MSN150 limits let-through energy during a fault to help protect downstream cabling.

Built for Australian switchboards.
At one module (17.5mm) wide, 83mm high and 70mm deep, the MSN150 clips onto standard 35mm DIN rail with 360° mounting flexibility, and its terminals take rigid conductors up to 35mm² at 2.8Nm. It is compliant with AS/NZS 60898.1, rated IP20, and operates from -25°C to 70°C to suit meter boxes, distribution boards and homes across Australian conditions. Hager auxiliaries including the MZ201 auxiliary contact, MZ202 alarm contact and MZ203/MZ204 shunt trips are available.

Q: What is the Hager MSN150 used for?
It is a 50A single-pole MCB, a common size for protecting sub-mains and heavy distribution feeds – such as sub-boards and large appliances – against overload and short circuit in residential and light commercial boards.

Q: What does the C curve mean on the MSN150?
The C curve trips on short circuit at 5 to 10 times the rated current, making it the general-purpose characteristic for mixed resistive and moderately inductive loads.

Q: What is the difference between the MSN150 (6kA) and a 10kA MCB?
6kA is the rated short-circuit breaking capacity, suited to residential and light commercial boards; a 10kA breaker such as Hager's NT range is specified where fault levels are higher, typically in commercial and industrial installations.

(hagmcb1506k)

Electric current
Rated current	50 A
Rated short-circuit breaking capacity Icn under 230 V AC according to IEC 60898-1	6 kA
Rated current -15DegC	65,4 A
Rated current -10DegC	63,7 A
Rated current -5DegC	62 A
Rated current at 0DegC	60,3 A
Rated current 5DegC	58,6 A
Rated current 10DegC	56,9 A
Rated current 15DegC	55,1 A
Rated current at 20DegC	53,4 A
Rated current 25DegC	51,7 A
Rated current 30DegC	50 A
Rated current 35DegC	49,3 A
Rated current at 40DegC	48,5 A
Rated current at 45DegC	47,8 A
Rated current at 50DegC	47 A
Rated current 55DegC	46,3 A
Rated current 60DegC	45,5 A
Rated current 65DegC	44,8 A
Rated current 70DegC	44 A
Architecture
Type of pole	1P
Curve	C
Capacity
Number of modules	1
Installation, mounting
Nominal tightening torque top terminal	2,80 - 2,80 Nm
Nominal tightening torque down terminal	2,80 - 2,80 Nm
Nominal tightening torque	2,80 - 2,80 Nm
Type of bottom connection for modular devices	biconnect
Type of top connection for modular devices	Screw terminal
360?ø mounting position possible	Yes
Main electrical attributes
Rated short-circuit breaking capacity Icn AC according to IEC 60898-1	6 kA
Voltage
Rated operational voltage Ue	240 - 415 V
Type voltage supply	AC
Rated insulation voltage Ui	500 V
Rated impulse withstand voltage Uimp	4000 V
Frequency
Frequency	50 - 60 Hz
Connection
Cross-section of input and output with screws, for massive conductors	1 - 35 mm^2
Cross-section of input and output with screws, for flexible conductors	1 - 25 mm^2
Cross-section of input with screws, for flexible conductors	1 - 25 mm^2
Cross-section of input with screws, for massive conductors	1 - 35 mm^2
Cross-section flexible conductor	1 - 25 mm^2
Cross-section rigid conductor	1 - 35 mm^2
Safety
Ingress Protection (IP) class	IP20
Use conditions
Degree of pollution according to IEC 60664 / IEC 60947-2	2
Class of energy limitation I^2t	3
Air humidity protection	For all climates
Operating temperature	-25 - 70 DegC
Power
Total power loss under IN	5,20 W
Connectivity
Type of connection	Screw terminal
Top connection alignment for modular devices	Aligned terminal
Down connection alignment for modular devices	Aligned terminal
Dimensions
Height	83 mm
Width	17,50 mm
Depth	70 mm