A restraint system includes a housing, a spool rotatably coupled to the housing, and an actuator fixed relative to the housing. The spool has a base plate with holes. The holes are spaced from each other circumferentially about the spool. The actuator has a pin movable between an engaged position extending into one of the holes and a disengaged position spaced from the holes.

A restraint system includes a housing, a spool, a disc, a cutter, a plate, and an actuator. The spool is rotatably coupled to the housing. The disc is fixed to the spool. The cutter is moveable along a path from a spaced position away from the disc to a cutting position adjacent the disc. The plate is moveable between an engaged position extending in the path and a disengaged position spaced from the path. The actuator is coupled to the plate.

A restraint system includes a housing, a spool, a disc, a cutter, a plate, and an actuator. The spool is rotatably coupled to the housing. The disc is fixed to the spool. The cutter is moveable along a path from a spaced position away from the disc to a cutting position adjacent the disc. The plate is moveable between an engaged position extending in the path and a disengaged position spaced from the path. The actuator is coupled to the plate.

A seatbelt retractor for a vehicle seatbelt webbing includes a frame. A locking disk is rotatable relative to the frame. A spool is rotatably mounted to the frame and is configured to have the seatbelt webbing wound thereon. A torsion bar is connected to the locking disk and the spool. A band is connected to the locking disk and the spool. The seatbelt retractor has a first state in which the torsion bar and the band each deform to at least partially absorb a load on the seatbelt webbing when the spool rotates relative to the locking disk. The seatbelt retractor has a second state in which the band alone deforms to at least partially absorb the load on the seatbelt webbing when the spool rotates relative to the locking disk. The seatbelt retractor is configured to switch from the first state to the second state.

A seatbelt retractor for a vehicle seatbelt webbing includes a frame. A locking disk is rotatable relative to the frame. A spool is rotatably mounted to the frame and is configured to have the seatbelt webbing wound thereon. A torsion bar is connected to the locking disk and the spool. A band is connected to the locking disk and the spool. The seatbelt retractor has a first state in which the torsion bar and the band each deform to at least partially absorb a load on the seatbelt webbing when the spool rotates relative to the locking disk. The seatbelt retractor has a second state in which the band alone deforms to at least partially absorb the load on the seatbelt webbing when the spool rotates relative to the locking disk. The seatbelt retractor is configured to switch from the first state to the second state.