SSP-2I-RM

SSP-2I-RM with DPS and DTBG detectors

The SSP-2I-RM is used where fire detectors are installed directly in engine bays, gearbox areas, heater compartments, or other fire-risk zones. The detector itself reacts to thermal conditions, while the socket provides the mechanical and electrical interface. If the socket contact is weak, corroded, loose, or damaged, the executive block may receive an incorrect signal even if the detector is serviceable. For this reason, the socket is normally checked together with the DPS / DTBG sensor, the wiring harness, and the SSP-FK-BI executive block.

Electrical connection through SSP-2I-RM

The SSP-2I-RM is a two-contact round connector intended for two-wire sensor circuits. In aircraft fire warning systems, DPS or DTBG sensors are often connected in groups, and the socket becomes part of that series chain. A fault in one socket can affect the whole group, especially where several sensors are connected to one channel. During troubleshooting, technicians normally check contact continuity, insulation condition, mechanical locking, wire condition, and whether the sensor is seated correctly in the socket.

Mechanical design of the SSP-2I-RM

The socket is built for harsh aircraft compartments, not for clean panel installation. The body is made from a corrosion-resistant metal alloy and is intended to tolerate vibration, temperature changes, fuel vapors, oil, hydraulic fluids, and general contamination typical of technical bays. The connector must keep the detector fixed under vibration and aircraft movement while still allowing removal for inspection or replacement. Damage to the body, threads, bayonet section, contacts or locking surfaces can make the sensor installation unreliable.

Cable outlet and protection of SSP-2I-RM

The SSP-2I-RM usually includes a protected cable outlet, often with a flexible metal braid or metal hose section. This protects the wires from mechanical rubbing, local heat exposure, debris, and vibration. In fire-risk compartments, the first stage of protection is especially important because wiring must remain intact long enough for the system to detect the fire and transmit the signal. A broken braid, exposed wire, poor crimp, loose shield or damaged insulation should be treated as a serious defect, not as a minor cosmetic issue.

Installation areas for SSP-2I-RM sockets

SSP-2I-RM sockets are installed in the same zones where DPS or DTBG fire detectors are mounted. On aircraft and helicopters, this may include engine compartments, main gearbox areas, heater zones, and other protected technical spaces. The exact position depends on the aircraft fire warning system layout. The socket should not be relocated only for easier access, because sensor position affects fire detection quality. Replacement should follow the aircraft maintenance manual, wiring diagram, and approved sensor installation scheme.

Supply and inspection of SSP-2I-RM

When ordering SSP-2I-RM, it is useful to specify whether the requirement is for the socket only, a socket with cable tail, a complete detector connection assembly, or installation hardware. The intended sensor type should also be stated: DPS, DPS-1AG, DTBG or another approved detector. Before installation, the part should be checked for contact condition, body damage, thread or bayonet wear, metal braid integrity, wire insulation, connector cleanliness, and compatibility with the SSP-FK / SSP-FK-BI fire warning system.

Related system equipment: DPS, SSP-FK Series 2, SSP-FK-BI Series 2. These positions are grouped by system function and installation context, not as interchangeable replacements.