diff --git a/src/framework/domain/components.py b/src/framework/domain/components.py
index 345d839..a819673 100644
--- a/src/framework/domain/components.py
+++ b/src/framework/domain/components.py
@@ -3,6 +3,7 @@
 from typing import List
 
 from .entity import Entity
+from .exception import KnapsackBurst
 
 __all__ = [
     "Component",
@@ -220,6 +221,20 @@ class PSUComponent(Component):
     modularity: EPSUModularity
 
 
+@dataclass
+class Knapsack(Entity):
+    components: list[Component]
+    max_price: Money
+    current_price: Money
+
+    def push(self, component: Component, price: Money):
+        if self.current_price + price > self.max_price:
+            raise KnapsackBurst()
+
+        # TODO checar restrições
+        self.components.append(component)
+
+
 component_cls_idx = [
     Component,
     MotherboardComponent,
diff --git a/src/framework/domain/exception.py b/src/framework/domain/exception.py
index 0f45d56..6d501e0 100644
--- a/src/framework/domain/exception.py
+++ b/src/framework/domain/exception.py
@@ -9,3 +9,13 @@ class DomainException(Exception):
 
     def __repr__(self):
         return f"{self.__class__.__name__}: {self._message}"
+
+
+@dataclass
+class KnapsackBurst(DomainException):
+    _message: str = "A bolsa atingiu o limite de preço."
+
+
+@dataclass
+class CurrencyNotEqual(DomainException):
+    _message: str = "As moedas são diferentes"
diff --git a/src/framework/domain/value_object.py b/src/framework/domain/value_object.py
index 5813968..86466da 100644
--- a/src/framework/domain/value_object.py
+++ b/src/framework/domain/value_object.py
@@ -6,6 +6,7 @@
 from typing import Tuple
 
 from .rule import Rule, BussinessAssertionExtension
+from .exception import CurrencyNotEqual
 
 __all__ = ["UUID", "UUIDv4", "UUIDv5", "ValueObject", "Money", "URL"]
 
@@ -32,6 +33,11 @@ def __eq__(self, oMoney: "Money") -> bool:
     def __lt__(self, oMoney: "Money") -> bool:
         return self.currency == oMoney.currency and self.amount < oMoney.amount
 
+    def __add__(self, oMoney: "Money") -> "Money":
+        if self.currency != oMoney.currency:
+            raise CurrencyNotEqual()
+        return Money(self.amount + oMoney.amount)
+
     def __repr__(self):
         return f"{self.currency} {self.amount:.2f}"